Mamut Business Software Initialization error.

Hi! Yesterday I installed .Net Framework 4 to my computer. Recently I tried to back up in Mamut (my business software), and a message appeared. Is my .net framework 4 compatible to the software that I am using?
That I think the error is related to the .net framework that I installed.
Please give me some Idea.
Thanks

MDataTools.exe – NET Framework Initialization Error
Unable to find a version of the runtime to run this application.
OK
