I Get Debugging Error - Rebooting computer solved problem
 

When I click "Start" to place words, I get the following error:

Heading reads: KHPro.exe - Common Language Runtime Debugging Services

and then:
Application has generated an exception that could not be handled.
Process id=0x1484 (5252), Thread id=0x378 (888).

Click OK to terminate the application.
Click CANCEL to debug the application

How do I fix this problem?

Uninstall and reinstall. Sounds like something got corrupted.
Second suggestion is to go to Microsoft Update website and do the Custom Update to get all the latest updates. Install everything as most of them do effect how your computer operates.

Did Dale's suggestions work? I agree with what he posted as the causes and probably ways to fix the problem.

Thanks to all replies. I re-booted for a second time and the error went away, so, maybe it was a fluke.