Greetings all. First time poster so please be gentle.

I have purchased PSP X6 and have all patches current. Whenever I have more than one file open and I switch between the files, the application locks up every single time. As long as I stay on one file, it seems to work fine. It does the same thing whether I'm using the 64-bit or 32-bit versions. I can't even close the application. I have to kill it via Task Manager. The graphic attached shows that the app is hung under Windows 8.1 (also current on patches).
Any suggestions would be greatly appreciated.
Many thanks!
Charlie