Thanks for your suggestion about Nero Clean Tool. I tried it and after re-entering the code very carefully, It worked. Now I can use Nero Backituo. What a fine addition this program is.
However, not being one to let well enough alone, I downloaded and installed the 188.8.131.52 update. After that, if I start Backitup, Burning ROM or any of the Nero programs using Nero Smart Start everything works great, but if I start Nero Burning ROM from the Start menu or a desktop icon, it shows a message telling me that Nero has encountered a problem and needs to close. Do you have any idea as to what this problem might be and how to correct it?
Once again, Derrick, I appreciate your kind help, finaly I can use Nero 6. I love this program!!!