Every time i run 2.4, it crashes "This application has encountered a problem and needs to close". I am running Win XP Pro SP3, using the UL XP SP3 2009-08-21.

Its obviously a .NET related problem, here is the error in the event log.

Hope this helps - let me know if you need more info.

Event Type: Error
Event Source: .NET Runtime 2.0 Error Reporting
Event Category: None
Event ID: 5000
Date: 01/09/2009
Time: 11:34:09
User: N/A
Computer: LCC20694XP
Description:
EventType clr20r3, P1 wud.exe, P2 2.40.1299.0, P3 49420147, P4 wud, P5 2.40.1299.0, P6 49420147, P7 1f8, P8 1c, P9 system.invalidcastexception, P10 NIL.

PS WUD 2.40 Build 1299