http://bugs.winehq.org/show_bug.cgi?id=17617
--- Comment #23 from Vincent Povirk madewokherd@gmail.com 2009-10-10 12:43:27 --- 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.
(Also, someone really needs to cut the IWICStreamImpl traces. We certainly don't need two lines for every read and probably don't even need one.)