DOpus 10 Constantly Crashing

Don't know where to begin. The program is constantly crashing, and is extremely slow. Today I tried to pull up the About Directory Opus box to get the version number and that box is open (according to the Task Manager, yet it is nowhere to be seen. Windows Explorer does not crash at all and is not sluggish. So I got the bright idea to use Revo Unistaller to get rid of the entire installation, and then rebooted and reinstalled, and Wow! - nothing changed. Even the About window is in neverland as before. I don't know where to start trying to figure this out, and searching this forum has not helped. Who can help me?

This could be of help: [url]General slowdown or instability investigation steps]
The "see also" section is also interesting.

I will work on these. Thanks.