InfoPath Dev

When trying to open my manifest file in the designer, VS 2008 crashes. I see this infor in the application error log. The form opens fine on another developers PC - does anyone know how I can debug this?

Event Type: Error
Event Source: Microsoft Visual Studio
Event Category: None
Event ID: 1000
Date:  2009-02-09
Time:  08:48:23
User:  N/A
Computer: PC36684
Description:
Faulting application devenv.exe, version 9.0.30729.1, stamp 488f2b50, faulting module ipdesign.dll, version 12.0.6214.1000, stamp 47069bfc, debug? 0, fault address 0x00394e8a.

I am also getting the same error:

Event Type:    Error
Event Source:    Microsoft Visual Studio
Event Category:    None
Event ID:    1000
Date:        5/6/2010
Time:        8:26:54 PM
User:        N/A
Computer:    MOSSDEVTEST6
Description:
Faulting application devenv.exe, version 9.0.21022.8, stamp 47317b3d, faulting module ipdesign.dll, version 12.0.6214.1000, stamp 47069bfc, debug? 0, fault address 0x00394e8a.

Can someone please help here ?

Thanks,

Manas