There is a Stardock bat file that will purge Wb from your PC and then you can reinstal. It does not delete your settings so they'll be as they were when you reinstall. Below are the instructions for use:
The following tool will purge the application.
**IMPORTANT** Please save any open documents/work and close out all of your applications including browsers.
Please follow this link:
http://sd.stardock.com/zubaz/apps/Purge_WB.bat
Save the file to your desktop, right click it and select "Run as Administrator" if you're on Vista/7/8/8.1/10
If you are running Windows 8/10, you may be notified that Windows is protecting your PC. Select "More info" and then "Run anyway".
Reboot the computer and reinstall the application. Note: It is important to get the most recent version of the application.