[HELP] Visual Basics 2010 error

i have this error:

het systeem kan het opgegeven bestand niet vinden, means: The system can not find the specified file

this also happens in visual basics 2008
and in c++ and C# 2010
can anyone fix this?

i tried: re-instal visual basics
and re-instal .net framework 3.5
didnt work :S

Clearly .Net Framework's file is missing....Try Installing .Net 4.0

Suggestion: Don't use Visual Basic 2010....contains lots of bugs... I also reverted to 2008 !!