Corel X7 crashes on new document or open document...

've been using corel X7 since it came out with no issues. In the last few days, when I try to start a new document, it (coreldraw) crashes. If I try to open a document, it crashes. the other corel programs work perfectly.. photopaint, capture... I've tried the F8 trick, I've uninstalled / reinstalled... completely uninstalled and installed X6... same issue in X6… I’ve reinstalled .net 4.5…

 I've been using Corel for 21 years and this one has me stumped!

Becuase you'll no doubt ask, my setup is:

 Dell Precision T5600
intel Xeon e5-2630
64gb ram
windows 7 64bit 

Thanks!

 Hoping that I don't have to re-install windows!