I tried Revo at one point to no avail, but... after I posted my question, I noticed the uninstall topic for SE and 2007 and decided to try that suggestion for my 2008. I downloaded v188.8.131.52 from FileHippo.com (since v184.108.40.206 was not offered) to my desktop and ran it. One of the options was uninstall, so I selected that and it uninstalled successfully. I was then able to install the current version of Ad-Aware. Thanks!
I am attempting to uninstall Ad-Aware 2008 v220.127.116.11 and evidently I am missing the installation package in my program files\common files folder. It will not allow me to uninstall and I cannot install the current version of Ad-Aware over it, as it wants to uninstall the old version first, and I get the same error. I've searched my entire computer for the installation package and was unable to locate it. Any ideas on how I can successfully uninstall?