Windows app (Win 7) only showing blank window

Fubar …Desktop Application not working.
Windows 7, 64-bit, 16Gb RAM
Launched today and seemingly after syncing it then goes blank-white.

I can still access via web browsers -Chrome, Firefox.

I will troubleshoot more tonite, but I tried things I found on the forums here, but no-go.

Maybe anyone seeing this will have more suggestions.
right now I got:

  • download backup
  • rename data folder so it redownloads
  • reinstall
  • I also tried emptying my temp directory under the user

::extreme disappointment::
Twohawks

UPDATE: There are no controls on the (blank white) page, but if I issue Alt-Arrow command and navigate away the interface fully populates. If I navigate back into that page, it goes blank again.

I will be troubleshooting later with replacing content, etc.