When i am goint to install the files via the iw4minstaller i alway get an error

Here is a image of the error: its on german but i translated the first sentence...

PS: The error appears, right after when i click on install. So i am able to start the installer and to select the path, but when i click on install it appears this error...

 

I hope anyone can help me with this ridiculous error^^ :| :?:

imo, something is wrong with your .net framework

ehmm...yes but idk what....

but now i have found a solution....i donwloaded the files for 4d1 with a torrent and extracted it into the main folder of mw2 and....It worked (updated also)

so i think the installer and my .net framework didn't like them each other^^

He fixed it...

/locked