Last modified: 2011-11-29 20:56:48 UTC
I found "error creating thumbnail" when trying to create thumbnail smaller then the original PNG images. Works fine when the thumbnail larger then original size. Also works fine on 1.5.8 whatever the thumbnail size. These failed on 1.6.3, 1.6.7 and 1.7 r15313 mw 1.6.7 testcase: http://202.148.16.226/mw167/index.php/Main_Page mw 1.6.3 testcase: http://202.148.16.226/mw163/index.php/Main_Page mw 1.5.8 testcase: http://202.148.16.226/mw158/index.php/Main_Page mw 1.7 testcase: http://202.148.16.226/mw17/index.php/Main_Page All wikis are fresh installation and installed on the same server running Windows 2003 Server, PHP 5.0.4 Apache 2.0.5.5 ImageMagick 6.2.7
Check permissions. Apache needs to be able to write to the thumbnail directories. Check that ImageMagick is set up right. Check that the path to convert is correct in each configuration.
If the issue was permission, the mw.1.5.8 should produced error which is not.
After spending hours of trial and error, I found that the problem caused by extra characters . " 2>&1"; on include/image.php. After removing that, image thumbnailing is working again. I'm not a PHP expert, and I don't know the use of this extra characters, but still this is a workaround to my problem. These characters are not found on mw 1.5.8 (mw 1.5.8 works fine with image thumbnailing, see initial description and comment #2). modified include/image.php: wfEscapeShellArg($thumbPath); //wfEscapeShellArg($thumbPath) . " 2>&1";
2>&1 means "redirect standard error to standard output". That's probably used to hide errors in apache logs.
Closing bug. Probably solution should be added (where?) to document it.
Bug was already closed in c5.
