Installation Help

So I keep getting error when trying to install things now. First it happened with Skype which I somehow managed to overcome, but now I can't update Flash Player and it's preventing me from watching YouTube videos.

The exact error for Flash is here.
http://img52.imageshack.us/img52/859...board01ybt.jpg

I've run it normally and as administrator God knows how many times. My account is the only account on my computer and is admin.

Did you try recalibrating the polarity of your SIJMU colloid?

what about safe mode? Does that work?
Failing that try uninstall/reinstall
Uninstall Flash Player | Windows