Thanks guys, I will give the clean install a go first, setting up all my settings is much better than losing all my projects!! If this doesnt fix then tech support and try the Visual C++ update, even though I have no idea how to do this. I was so happy with X2 up until now, other than tiny little glitches I have had no problems at all. But this one I am not completelly sure that it is a bug in Sonar so it could be the Visual C++. I will report back wiht my findings tonight.