Can't save anything

Hi all,

I just upgraded to CorelDraw X7 and now find that I cannot save any files. I keep getting an error message:

"A problem occurred accessing memory. Please refer to the Technical Support Help"

Condition #1001-D:/Waldo/V1700/APPS/VGCORE/CDCORE...

I have tried rebooting to no effect.

Any suggestions would be most welcome.