http://img834.imageshack.us/i/fallout3buggedmob.png/
As long as I ignore it it's just making the usual sounds but doesn't move or attack. When I kill it, the game crashes (and I have to kill it for a quest).
I already checked the files via the steam function which says "everything ok". Game should be the latest version, all DLCs are enabled, no 3rd party software.
If you need any hardware information, tell me and I'll post it. Sorry for my bad English.
Edit #1: Added log from the Event Viewer:
Faulting application name: Fallout3.exe, version: 1.0.0.15, time stamp: 0x48ea7360
Faulting module name: Fallout3.exe, version: 1.0.0.15, time stamp: 0x48ea7360
Exception code: 0xc0000005
Fault offset: 0x0029b9c7
Faulting process id: 0x1bd4
Faulting application start time: 0x01cb445bbc96d6c4
Faulting application path: c:\games\steam\steamapps\common\fallout 3 goty\Fallout3.exe
Faulting module path: c:\games\steam\steamapps\common\fallout 3 goty\Fallout3.exe
Report Id: 18ba59bf-b04f-11df-8427-001fd0d75386
Faulting module name: Fallout3.exe, version: 1.0.0.15, time stamp: 0x48ea7360
Exception code: 0xc0000005
Fault offset: 0x0029b9c7
Faulting process id: 0x1bd4
Faulting application start time: 0x01cb445bbc96d6c4
Faulting application path: c:\games\steam\steamapps\common\fallout 3 goty\Fallout3.exe
Faulting module path: c:\games\steam\steamapps\common\fallout 3 goty\Fallout3.exe
Report Id: 18ba59bf-b04f-11df-8427-001fd0d75386