3. Go to Edit->Find
4. Search for MFEAgent.msi
5. Delete the PackageName entry that is found with MFEAgent.msi as its value. It should be under something like HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Installer\Products\2C12BAA2ADC498140ACEE56D6611F348\SourceList. The 2C12BAA2ADC498140ACEE56D6611F348 may vary between machines though, which is why you should search for it
6. Restart your computer
7. Reinstall the McAfee Agent
An alternative to searching in steps 3 and 4 would be to look in the Application event log at your event ID 1002. This will give you the exact registry path to the PackageName key you need to delete.