http://bugs.winehq.org/show_bug.cgi?id=19682
--- Comment #4 from Dmitry Timoshkov dmitry@codeweavers.com 2009-08-12 03:19:34 --- +cursor log should help to figure out why XcursorImageCreate() fails for you.
But the following patch should help in avoiding the crash: http://www.winehq.org/pipermail/wine-patches/2009-August/076945.html