SH3 GWX 3 suddenly won't load - help!

[Tailmange]

Hello everyone!

I've been lurking here for a while and have really appreciated the advice and mods available, however I'm now in need of some assistance.

A couple of days ago SH3 abruptly decided to refuse to load, despite me not having any problems for the 2 months I've been playing it for. I'm running the Steam version with Windows 7 with GWX 3 and several mods, however I'd made no changes or installed anything new on my PC at all between the last time I played and when the problem first came up. Now the initial loading screen bar gets to about halfway before it CTDs.

I've checked the event log and got the following:

Fault bucket 572030508, type 1
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: sh3.exe
P2: 1.4.0.1
P3: 42ae9b3e
P4: FileManager.dll
P5: 0.0.0.0
P6: 42ae9924
P7: c0000005
P8: 00004432
P9:
P10:

Attached files:
C:\Users\******\AppData\Local\Temp\WER25CC.tmp.WER InternalMetadata.xml

These files may be available here:
C:\ProgramData\Microsoft\Windows\WER\ReportArchive \AppCrash_sh3.exe_8df0d9215057a42bf97efc19d176437b b63ed1ab_138e51db

Analysis symbol:
Rechecking for solution: 0
Report Id: 32e4a940-25dd-11e1-af95-00262d1b344b
Report Status: 0

I've tried reinstalling everything twice, and replacing the Filemanager.dll file in the modded version with a version from a clean install but it's still not playing ball. Does anyone have any suggestions?

Many thanks!

Tailmange