Guys, you must be kidding.
This is a MAJOR issue. It just happened to me (tried the pro version, uninstalled, tried the server version, would not generate a valid demo key, uninstalled the lot). Next day I get crazy trying to understand why JS is no longer working, and Help/About does not even display IE version!
I downloaded your software yesterday, but reading this post you should have fixed this problem 2 months ago. Obviously you haven't since it just happened.
Your software has wrecked my system and caused me a lot of wasted time. And all this for a bug that you have known of for at least two months. Now I am here trying to find out a way to get out of this. What is the registry setting to change in order to be able to reinstall IE? Grrr. I can't believe I have to do this because of your buggy software!
The unregistration of the dll did not work (how could it anyway? avast is thank god already uninstalled!), no norton around, and you have a very angry user.