Last modified: 2005-10-28 00:12:22 UTC
MediaWiki refuses to generate a thumbnail for huge images (to enforce an upper limit for memory requirements). The current behavior in such case is that [[Image:Foo.png|thumb|Foo!]] will appear as a red broken link to Special:Upload, which is quite unintuitive. Even more strange, there is a difference between [[Image:Foo.png|thumb|200px|Foo!]] and [[Image:Foo.png|right|200px|Foo!]]. While the thumbnail is not generated in both case, the latter displays correctly, using just a scaled img linking to the original full-sized image and letting the browser to do all work. I believe both should behave in the same way (and display the image).
Fixed on CVS HEAD and live; thumb will now fall back gracefully to client-side scaling as the other cases do. For super-giant images this may be bad for your web browser, but at least it's off our servers. ;)