Have you tried unistalling it. I had a problem a couple of weeks ago where it would freeze almost everytime I tried opening, saving, etc...... anything where a file dialog box poped up and had to shut down computer.
I could repair and reinstall and that would not fix it. I tried to unistall it and failed.
So I ran Windows Install Clean-Up on it deleted the main folder and it has worked great.
Of course I re-installed it.