i started it with winedbg WineDbg starting on pid 001f 0x7b85852f: movl %esi,0x0(%esp) Wine-dbg>c fixme:win:EnumDisplayDevicesW ((null),0,0x33f6dc,0x00000000), stub! First chance exception: page fault on read access to 0x00000000 in 32-bit code (0x0040dd84). Register dump: CS:0073 SS:007b DS:007b ES:007b FS:0033 GS:003b EIP:0040dd84 ESP:0033e73c EBP:0033e790 EFLAGS:00210246( R- -- I Z- -P- ) EAX:00000000 EBX:68406ff4 ECX:008eaa60 EDX:0000000f ESI:008eaa60 EDI:00000000 Stack dump: 0x0033e73c: 00000003 ff3c3c3c 3f800000 00000000 0x0033e74c: 0000000f 005429cf 0002004e 0033ed64 0x0033e75c: 00000000 00000000 683e7f3a 0002004e 0x0033e76c: 0000000f 00000000 00000000 00000001 0x0033e77c: 00000000 01000000 68406ff4 0033ed64 0x0033e78c: 0002004e 0033e7e0 683e9a3c 00542900 Backtrace: =>0 0x0040dd84 in aw (+0xdd84) (0x0033e790) 1 0x683e9a3c in user32 (+0x99a3b) (0x0033e7e0) 2 0x683e891a in user32 (+0x98919) (0x0033ecb0) 3 0x683eae46 in user32 (+0x9ae45) (0x0033ed00) 4 0x683ad5c1 in user32 (+0x5d5c0) (0x0033ed70) 5 0x683b1cf6 in user32 (+0x61cf5) (0x0033edf0) 6 0x683b219c SendMessageW+0x4b() in user32 (0x0033ee40) 7 0x683beea6 RedrawWindow+0x235() in user32 (0x0033eeb0) 8 0x683c0475 UpdateWindow+0x34() in user32 (0x0033eed0) 0x0040dd84: movl 0x0(%eax),%ecx