msvc.net 2002 application cannot start

[gok]

I did purchased msvc.net 2003 last year and downloaded msvc.net 2002 (a must
for acad2004) from msdn. It was working fine forawhile and now after one week
vacation can not open studio:
“Application cannot start”
Did reinstall it from scratch: the same error message.
Could somebody help, please!
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gok