VS9 "Visual C++ Runtime Error" on start

[PizzaMan]

I have been using VS9 for a while now, and suddenly I'm getting this error when I try to start the editor:

Microsoft Visual C++ Runtime Library
Runtime error
Programm: C:\...vstudio.exe
abnormal program termination

Followed by:

Ulead GRC: vstudio.exe - Application Error
The instruction at "0x73dd5fad" referenced memory at "0x0078d8c0". The memory could not be "written".

Click on OK to terminate the program


I've tried re-installing several times, deleting all files in the VS9 directory, removing all registry keys and cleaning up the \Temp directory. I have tried it as a fresh install and with the latest patch, and continue to get the same result.

Thanks in advance for your help.

[PizzaMan]

Does anyone know how to fix this?