I do have the file but still get the same error message when I try yo run it manualy.
The problem is more generic and every *.msc file ( like services.msc for open the services control panel) which opens a management console displays the same error.
It is for Vista, but it's the same thing.
If that does not work, it can by a myriad of different things, but, fwiw, make sure you have the folder Users -username-Appdata - Local - Temp , intact and have not accidentally deleted it. (Or, If you have it, delete the entire contents -don't worry, it will do no harm)