Cannot uninstall program: Error opening the installtion log file.

I am trying to uninstall VIPRE anti-virus from a Windows 7 workstation. I get the message "Error opening the installation log file. Verify that the specific log file location exists and is writable." Of course, the message doesn't actually tell you what the location and file name is that it's having trouble opening.

All searches I've come across refer to MS Knowledge Base article  http://support.microsoft.com/kb/2564571, which basically gives the steps:

1. Stop the explorer.exe process from Task Manager

2. Open Task Task manager and start a new Explorer.exe task.

CTRL+ALT+DEL | Task Manager | Applications | New Task...

3. Retry the uninstallation again from "Program and Features". It should now allow you to successfully uninstall the affected software.

I've done this multiple times. It doesn't work for me. I continue to get the error message. How can I fix this?