http://bugs.winehq.org/show_bug.cgi?id=17617
--- Comment #24 from Stefan Leichter Stefan.Leichter@camLine.com 2009-10-10 13:32:21 --- (In reply to comment #23)
Ok, so GifDecoder_Initialize is failing, meaning that Wine's copied libungif (which was moved unchanged from oleaut32 to windowscodecs) couldn't read the file. Either DGifOpen or DGifSlurp is failing.
Unfortunately, we don't have any traces in that code.
Now i have one in each of the two places ;-)
trace:wincodecs:GifDecoder_Initialize DGifSlurp failed