Cannot complete the Topaz Clean2 command

Hello
Firstly my primary problem was resolved on Sunday by Ashley Robinson who gave all the replies. So she earns a BIG, BIG THANK YOU!!!!
Now yesterday when I wanted to save my Topaz changes in either regulate or Clean2, I got the following things:
"Proc Engine: error code:-1000"
I clicked OK only to get this:
Could not complete the Topaz Clean2 command because -Proc Engine error"
Why is that occurring? Need your help to solve this.
Thanks a lot.
