Hi guys, first post on the forum, but an happy GameEx user for more than one year. BTW, GameEx worth every dollar I gave (and more!). Here's my config: Vista Home Premium (no SP1 RC installed) Core 2 Duo E6320 2 Gb DDR2-667 GeForce 7600GT 2x80Go in RAID0 using the Intel ICH8R controller. GameEx registered Using GoodMerge sets My Roms are on a network share (Z:) that my MediaCenter has full write access. Since release 8.9x on GameEx: Everytime I select Sega Master System (Fusion emulator) in my list on emulator, GameEx crash with the "usual" DirectDraw error. All my other emulators runs fine (Project64, ZSNES, NESTopia, MAME and Fusion BUT WITH Genesis roms). Please note that Fusion emulator is running fine outside GameEx. Note that I tried: Changing Sega Master System emulator to another "slot" in GameEx. Unmerging my roms Copying my roms locally on my hard drive Tried other themes (it is crashing with every theme I tried) Tried changing resolution (right now i'm running GameEx 1920x1080 on my LCD TV but I've tried as low as 800x600) Tried moving every other "non-roms" files from my SMS roms folder Tried advanced graphics: off Tried 16 bits colors Tried 3 different nVIDIA GeForce drivers version 163.75, 169.12, 169.25 Reinstalled Vista Reinstalled GameEx without my "old" INI files (basically a fresh install) Read virtually every thread on this forums ;o) BTW, I'm an IT guy for a living and I'm pretty at ease with computers. So, this post is really a desperate call for help... Thx in advance for your help guys.