Asus G60VX
NVIDIA GeForce GTX 260M Driver ver. 275.33
Intel Mobile Core 2 Duo P8800 @ 2.66GHz
ram 4.00 GB Dual-Channel DDR2 @ 399MHz (6-6-6-18)
OS: MS Windows 7 Home Premium 64-bit SP1
Fallout3 GOTY
FOMM 0.13.21





I can start FO3 w/o any problems but if I try to enter megaton (and a few other vanilla locations ) FO3 CTD. I have tried changing lode order in FOMM but doesn't seem to make a difference, alway crash when attempting to enter Megaton. This is the error msg windows gives before I start the task mgr :

Problem signature:
Problem Event Name: APPCRASH
Application Name: Fallout3.exe
Application Version: 1.7.0.3
Application Timestamp: 4a40f18b
Fault Module Name: Fallout3.exe
Fault Module Version: 1.7.0.3
Fault Module Timestamp: 4a40f18b
Exception Code: c0000005
Exception Offset: 002d37ec
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789

Current FOMM load order:

Fallout3.esm
Anchorage.esm
ThePitt.esm
BrokenSteel.esm
PointLookout.esm
Zeta.esm
CRAFT.esm
CALIBR.esm
xCALIBR.esm
xCALIBRuniverse.esm
Project Beauty.esm
FO3 Wanderers Edition - Main File.esm
Mart's Mutant Mod.esm
FO3 Wanderers Edition - Alternate Travel.esp
DCInteriors_ComboEdition.esm
DarNifiedUIF3.esp
Project Beauty- Broken Steel.esp
Project Beauty- Point Lookout.esp
Error Fixes V1.3 - Higher FPS.esp
Error Fixes V1.3 - Fallout3 Wanderers Edition.esp
improved_shades_zumbs.esp
Error Fixes V1.3 - Fellout.esp
01AtM - Firefly Ranch.esp
a cuppa JOE.esp
LadyFrumperton.esp
MiniHideout.esp
Personal_Vault.esp
AlexScorpion's and Weijiesen's Smoking Fun.esp
Shady Stormchaser.esp
SR25Rifle.esp
HZ_FN57.esp
Barrett M468.esp
JQ-DuncanSword.esp
Dragonskin Tactical Outfit.esp
DragonskinBonusPack.esp
FO3 Wanderers Edition - Main File.esp
FO3 Wanderers Edition - DLC Anchorage.esp
FO3 Wanderers Edition - DLC The Pitt.esp
FO3 Wanderers Edition - DLC Broken Steel.esp
FO3 Wanderers Edition - DLC Point Lookout.esp
FO3 Wanderers Edition - DLC Mothership Zeta.esp
FO3 Wanderers Edition - Followers Enhanced (BrokenSteel).esp
FO3 Wanderers Edition - Optional Restore Tracers.esp
FO3 Wanderers Edition - Project Beauty.esp
FO3 Wanderers Edition - Project Beauty (Followers Enhanced).esp
Mart's Mutant Mod.esp
Mart's Mutant Mod - DLC Anchorage.esp
Mart's Mutant Mod - DLC The Pitt.esp
Mart's Mutant Mod - DLC Broken Steel.esp
Mart's Mutant Mod - DLC Point Lookout.esp
Mart's Mutant Mod - DLC Zeta.esp
Mart's Mutant Mod - Project Beauty.esp
Mart's Mutant Mod - FWE Master Release.esp
Mart's Mutant Mod - FWE Master Release + Project Beauty.esp
Mart's Mutant Mod - FWE Master Release + DLCs.esp
Fellout-Full.esp
Fellout-pipboylight.esp
Fellout-BrokenSteel.esp
Fellout-PointLookout.esp
Fellout-Zeta.esp
xCALIBRuniverse.esp
myMPFO3_8_19_11.esp

Total active plugins: 62
Total plugins: 69

If anyone has any shiny ideas as to how I can repair this, please feel free to share.

Go through the mods on the list. You will find one that is defective after some time. Trail and error.