What should I do if the PerfectIt window is blank or appears in a strange part of the screen?

If you're experiencing an error where the PerfectIt pane is blank, jumps around or is unusable, you need to update PerfectIt to function with the latest Office update. Updating to PerfectIt 5 will solve the problem, and you can get that here.

If you have any questions about updating, full instructions are here.