launcher has stopped working dotnetfx_sp3.exe

I get the error message "launcher has stopped working" and the option to close the program occasionally, usually after I have been away from my computer for a few hours. Upon looking in task manager I see that it is associated with the program dotnetfx_sp3.exe which is located in c://windows/system32 . The properties of this say it is copywrited but doesn't say by who (ie microsoft). I believe it is part of .NET 4 but I can't confirm it. I can find nothing online about this error. Any ideas?
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  1. So no one has seen/heard about this error? I am the only one? Can I name it after myself then?
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