I fear that I have to report the same issue, but this time it was with LOOT 0.9.0 (which had been running happily since not long after release) on Windows 7. LOOT runs when launched as standalone, but it won't open when launched through Mod Organizer. I tried adding the --single-process argument, but that did not show any change in behavior. I also remove 0.9.0 and updated to 0.9.1 with no change. [spoiler=Event viewer shows this exception]Faulting application name: LOOT.exe, version: 0.9.1.0, time stamp: 0x576b84b3 Faulting module name: ntdll.dll, version: 6.1.7601.23418, time stamp: 0x5708a73e Exception code: 0xc0000005 Fault offset: 0x0004e6df Faulting process id: 0x1f40 Faulting application start time: 0x01d1d1285ab049ab Faulting application path: C:\Program Files (x86)\Steam\steamapps\common\Skyrim\LOOT\LOOT.exe Faulting module path: C:\Windows\SysWOW64\ntdll.dll Report Id: 98eace68-3d1b-11e6-b4d0-0c84dc7885d6 I would note that I ran LOOT without problem just a day or two earlier, but it broke on Monday (June 27) evening without obvious cause.