500 Internal Server Error on topics/posts containing spacer images.

I've been test-driving GroupServer and discovered a minor but pretty nasty
issue: for reason or reasons unknown the Windows 10 Mail app replaces the <hr>
html tag with an image and attaches said image in its replies. This in turn
appears to trigger a bug in the GroupServer UI: whenever I access a topic where
I've sent a reply to via Windows 10 Mail via the web interface I get the
following error message:
 
Technical Description: 500 Internal Server Error
 
URL: <URL of topic>
 
Issue: ValueError: height and width must be > 0
 
Note that the image appears in the group's Recent Files and All Files lists,
and if I click on it the image preview page displays without an error. But if I
click the breadcrumb links on that page for the individual post or the topic it
belongs to I get the same error shown above.

Here you go:
 
2016-07-16T15:14:05 ERROR Zope.SiteErrorLog 1468682045.610.711128021361
http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq
Traceback (innermost last):
Module ZPublisher.Publish, line 138, in publish
Module ZPublisher.mapply, line 77, in mapply
Module ZPublisher.Publish, line 48, in call_object
Module gs.group.messages.topic.base.traverse, line 38, in __call__
Module zope.formlib.form, line 800, in __call__
Module zope.formlib.form, line 790, in render
Module Products.Five.browser.pagetemplatefile, line 125, in __call__
Module Products.Five.browser.pagetemplatefile, line 59, in __call__
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in __call__
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 888, in do_useMacro
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 946, in do_defineSlot
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 852, in do_condition
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 531, in do_optTag_tal
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
Module zope.tales.tales, line 696, in evaluate
- URL:
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/base/browser/templates/
topic.pt
- Line 67, Column 6
- Expression: <StringExpr u'groupserver.TopicPage'>
- Names:
{'args': (),
'container': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'context': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'default': <object object at 0x7fc1b0c17570>,
'here': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'loop': {},
'nothing': None,
'options': {},
'repeat': <Products.PageTemplates.Expressions.SafeMapping object at
0x7fc18f7ece68>,
'request': <HTTPRequest, URL=http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq>,
'root': <Application at >,
'template':
<Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at
0x7fc19fbfd190>,
'traverse_subpath': [],
'user': <CustomUser '3Zb5jMFZ1ALTBFin1x8uwW'>,
'view': <Products.Five.metaclass.GSTopicView object at
0x7fc18f806250>,
'views': <Products.Five.browser.pagetemplatefile.ViewMapper object
at 0x7fc18f7c3a10>}
Module zope.contentprovider.tales, line 80, in __call__
Module zope.viewlet.manager, line 124, in render
Module Products.Five.browser.pagetemplatefile, line 125, in __call__
Module Products.Five.browser.pagetemplatefile, line 59, in __call__
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in __call__
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 821, in do_loop_tal
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
Module zope.tales.tales, line 696, in evaluate
- URL:
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/base/browser/templates/
topicpagemanager.pt
- Line 3, Column 4
- Expression: <PathExpr standard:u'viewlet/render'>
- Names:
{'args': (),
'container': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'context': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'default': <object object at 0x7fc1b0c17570>,
'here': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'loop': {},
'nothing': None,
'options': {'viewlets':
[<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/ba$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/ba$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/ba$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/ba$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/ba$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/ba$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/ba$
'repeat': <Products.PageTemplates.Expressions.SafeMapping object at
0x7fc18f7ecec0>,
'request': <HTTPRequest, URL=http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq>,
'root': <Application at >,
'template':
<Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at
0x7fc19fbfdbd0>,
'traverse_subpath': [],
'user': <CustomUser '3Zb5jMFZ1ALTBFin1x8uwW'>,
'view': <Products.Five.viewlet.manager.<ViewletManager providing
ITopicPage> object at 0x7fc18f81eb50>,
'views': <Products.Five.browser.pagetemplatefile.ViewMapper object
at 0x7fc18f81eb90>}
Module zope.tales.expressions, line 217, in __call__
Module Products.PageTemplates.Expressions, line 155, in _eval
Module Products.PageTemplates.Expressions, line 117, in render
Module zope.browserpage.simpleviewclass, line 44, in __call__
Module Products.Five.browser.pagetemplatefile, line 125, in __call__
Module Products.Five.browser.pagetemplatefile, line 59, in __call__
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in __call__
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 821, in do_loop_tal
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 531, in do_optTag_tal
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
Module zope.tales.tales, line 696, in evaluate
- URL:
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/base/browser/templates/
postlist.pt
- Line 5, Column 4
- Expression: <StringExpr u'groupserver.Post'>
- Names:
{'args': (),
'container': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'context': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'default': <object object at 0x7fc1b0c17570>,
'here': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'loop': {},
'nothing': None,
'options': {},
'repeat': <Products.PageTemplates.Expressions.SafeMapping object at
0x7fc18f7ecf70>,
'request': <HTTPRequest, URL=http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq>,
'root': <Application at >,
'template':
<Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at
0x7fc19fc0cc90>,
'traverse_subpath': [],
'user': <CustomUser '3Zb5jMFZ1ALTBFin1x8uwW'>,
'view': <Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.topic.base-4.0.6.dev20160128192927-py2.7.egg/gs/group/messages/topic/base/browser/templa$
'views': <Products.Five.browser.pagetemplatefile.ViewMapper object
at 0x7fc18f7c3f90>}
Module zope.contentprovider.tales, line 80, in __call__
Module zope.viewlet.manager, line 124, in render
Module Products.Five.browser.pagetemplatefile, line 125, in __call__
Module Products.Five.browser.pagetemplatefile, line 59, in __call__
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in __call__
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 821, in do_loop_tal
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
Module zope.tales.tales, line 696, in evaluate
- URL:
/home/ubuntu/groupserver/eggs/gs.group.messages.post.base-4.0.3.dev20151112225230-py2.7.egg/gs/group/messages/post/base/browser/templates/
post.pt
- Line 9, Column 4
- Expression: <PathExpr standard:u'viewlet/render'>
- Names:
{'args': (),
'container': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'context': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'default': <object object at 0x7fc1b0c17570>,
'here': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'loop': {},
'nothing': None,
'options': {'viewlets':
[<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.post.base-4.0.3.dev20151112225230-py2.7.egg/gs/group/messages/post/base$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.post.base-4.0.3.dev20151112225230-py2.7.egg/gs/group/messages/post/base$
 
<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.post.base-4.0.3.dev20151112225230-py2.7.egg/gs/group/messages/post/base$
'repeat': <Products.PageTemplates.Expressions.SafeMapping object at
0x7fc18f7ecfc8>,
'request': <HTTPRequest, URL=http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq>,
'root': <Application at >,
'template':
<Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at
0x7fc19fc68490>,
'traverse_subpath': [],
'user': <CustomUser '3Zb5jMFZ1ALTBFin1x8uwW'>,
'view': <Products.Five.viewlet.manager.<ViewletManager providing
IPost> object at 0x7fc18f819990>,
'views': <Products.Five.browser.pagetemplatefile.ViewMapper object
at 0x7fc18f81e690>}
Module zope.tales.expressions, line 217, in __call__
Module Products.PageTemplates.Expressions, line 155, in _eval
Module Products.PageTemplates.Expressions, line 117, in render
Module zope.browserpage.simpleviewclass, line 44, in __call__
Module Products.Five.browser.pagetemplatefile, line 125, in __call__
Module Products.Five.browser.pagetemplatefile, line 59, in __call__
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in __call__
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
Module zope.tales.tales, line 696, in evaluate
- URL:
/home/ubuntu/groupserver/eggs/gs.group.messages.post.base-4.0.3.dev20151112225230-py2.7.egg/gs/group/messages/post/base/browser/templates/
body.pt
- Line 1, Column 0
- Expression: <StringExpr u'groupserver.PostBody'>
- Names:
{'args': (),
'container': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'context': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'default': <object object at 0x7fc1b0c17570>,
'here': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'loop': {},
'nothing': None,
'options': {},
'repeat': <Products.PageTemplates.Expressions.SafeMapping object at
0x7fc18f7800a8>,
'request': <HTTPRequest, URL=http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq>,
'root': <Application at >,
'template':
<Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at
0x7fc19fc77350>,
'traverse_subpath': [],
'user': <CustomUser '3Zb5jMFZ1ALTBFin1x8uwW'>,
'view': <Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.post.base-4.0.3.dev20151112225230-py2.7.egg/gs/group/messages/post/base/browser/template$
'views': <Products.Five.browser.pagetemplatefile.ViewMapper object
at 0x7fc18f8bc990>}
Module zope.contentprovider.tales, line 80, in __call__
Module zope.viewlet.manager, line 124, in render
Module Products.Five.browser.pagetemplatefile, line 125, in __call__
Module Products.Five.browser.pagetemplatefile, line 59, in __call__
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in __call__
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 821, in do_loop_tal
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 533, in do_optTag_tal
Module zope.tal.talinterpreter, line 518, in do_optTag
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
Module zope.tales.tales, line 696, in evaluate
- URL:
/home/ubuntu/groupserver/eggs/gs.group.messages.post.base-4.0.3.dev20151112225230-py2.7.egg/gs/group/messages/post/base/browser/templates/
simplemanager.pt
- Line 2, Column 2
- Expression: <PathExpr standard:u'viewlet/render'>
- Names:
{'args': (),
'container': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'context': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'default': <object object at 0x7fc1b0c17570>,
'here': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'loop': {},
'nothing': None,
'options': {'viewlets':
[<Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.post.text-1.1.1.dev20151113003420-py2.7.egg/gs/group/messages/post/text$
'repeat': <Products.PageTemplates.Expressions.SafeMapping object at
0x7fc18f780100>,
'request': <HTTPRequest, URL=http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq>,
'root': <Application at >,
'template':
<Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at
0x7fc19fc77510>,
'traverse_subpath': [],
'user': <CustomUser '3Zb5jMFZ1ALTBFin1x8uwW'>,
'view': <Products.Five.viewlet.manager.<ViewletManager providing
IBody> object at 0x7fc18f8bc310>,
'views': <Products.Five.browser.pagetemplatefile.ViewMapper object
at 0x7fc18f8bccd0>}
Module zope.tales.expressions, line 217, in __call__
Module Products.PageTemplates.Expressions, line 155, in _eval
Module Products.PageTemplates.Expressions, line 117, in render
Module zope.browserpage.simpleviewclass, line 44, in __call__
Module Products.Five.browser.pagetemplatefile, line 125, in __call__
Module Products.Five.browser.pagetemplatefile, line 59, in __call__
Module zope.pagetemplate.pagetemplate, line 113, in pt_render
Module zope.tal.talinterpreter, line 271, in __call__
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 852, in do_condition
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 852, in do_condition
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 821, in do_loop_tal
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 531, in do_optTag_tal
Module zope.tal.talinterpreter, line 513, in no_tag
Module zope.tal.talinterpreter, line 343, in interpret
Module zope.tal.talinterpreter, line 742, in do_insertStructure_tal
Module Products.PageTemplates.Expressions, line 218, in evaluateStructure
Module zope.tales.tales, line 696, in evaluate
- URL:
/home/ubuntu/groupserver/eggs/gs.group.messages.post.text-1.1.1.dev20151113003420-py2.7.egg/gs/group/messages/post/text/browser/templates/
viewlet.pt
- Line 69, Column 10
- Expression: <StringExpr u'groupserver.GroupImage'>
- Names:
{'args': (),
'container': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'context': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'default': <object object at 0x7fc1b0c17570>,
'here': <XWFVirtualMailingListArchive2 at
/groupserver/Content/initial_site/groups/coalition-members/messages>,
'loop': {},
'nothing': None,
'options': {},
'repeat': <Products.PageTemplates.Expressions.SafeMapping object at
0x7fc18f7801b0>,
'request': <HTTPRequest, URL=http://
<DOMAIN>/groups/coalition-members/messages/topic/4phjekcRn7a9lK4w6qhKEq>,
'root': <Application at >,
'template':
<Products.Five.browser.pagetemplatefile.ViewPageTemplateFile object at
0x7fc19fc48f90>,
'traverse_subpath': [],
'user': <CustomUser '3Zb5jMFZ1ALTBFin1x8uwW'>,
'view': <Products.Five.viewlet.viewlet.SimpleViewletClass from
/home/ubuntu/groupserver/eggs/gs.group.messages.post.text-1.1.1.dev20151113003420-py2.7.egg/gs/group/messages/post/text/browser/template$
'views': <Products.Five.browser.pagetemplatefile.ViewMapper object
at 0x7fc18f820f10>}
Module zope.contentprovider.tales, line 77, in __call__
Module gs.group.messages.image.contentprovider, line 37, in update
Module gs.group.messages.image.contentprovider, line 56, in get_final_size
Module zope.cachedescriptors.property, line 71, in __get__
Module gs.group.messages.image.contentprovider, line 83, in smallImage
Module gs.image.image, line 115, in get_resized
Module gs.image.image, line 137, in get_cache_name
Module gs.image.image, line 152, in _get_resized_img
Module gs.image.utils, line 48, in thumbnail_img
Module PIL.Image, line 1536, in resize
Module PIL.Image, line 1538, in resize
ValueError: height and width must be > 0
 
 
On Tue, Jul 19, 2016 at 10:01 PM, Michael JasonSmith <<email obscured>>
wrote:
 
> GroupServer <http://groupserver.org>
>
> [image: Photo of Michael JasonSmith] <http://groupserver.org​/p​/mpj17>
> *500 Internal Server Error on topics/posts containing spacer images.*
> <http://groupserver.org​/r​/topic​/4r8n1FfZJuDkkJdGVjSlzA>
> by *Michael JasonSmith* <http://groupserver.org​/p​/mpj17>
> in *GroupServer development* <http://groupserver.org​/groups​/development>
> ------------------------------
> Thanks for the detailed error, Donald. I **think** I know where the issue
> will be: the image is probably being fed the the resize-code, and it is
> dying. Could you help me confirm this? The log for GroupServer (in
> "var/log/instance.log") should contain a Python traceback. Could you
> post that?
>
> — Michael
> ------------------------------
> ⮪ Reply
>
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> 🖂 New topic <development@groupserver.org> View topic…
> <http://groupserver.org​/r​/topic​/4r8n1FfZJuDkkJdGVjSlzA>
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Done, in a separate email. Let me know if you need anything else.
 
-Donald Winship

I have made the fix, added two tests (one for wide and short images, and
another for tall and narrow images) and pushed the updates.
 
To update your own machine, first make this change to the versions.cfg file:
https://github.com​/groupserver​/buildout​/commit​/92a7c667f989faded80d8927d4963283ede70eb0​#diff​-b0468aad5891734de080d1ad63a84d56L106
 
And then rebuild GroupServer
$ . ./bin/buildout -n -c site.cfg install