follow up
I have tried your suggestion. I uninstalled and re-installed Parallels following the link and instructions exactly. It did not help. I still get the same error message, and the program is just not stable. If I change programs or execute commands too quickly, it hangs all the time and I get the color wheel of death. When I try to update and then install Tools, same effect. Can I possibly get some tech support for this product? Thank you.