"A required DLL file MSVBVM60.DLL not found"

Cause:

This error indicates several files associated with Visual Basic are missing from the computer. These files are required by Pop-up Inspector and/or any application designed with Visual Basic.

Provided below is a link to the files on Microsoft's website. If you click the link, it will begin downloading a program called 'vbrun60sp5.exe' to your computer. After the program has been downloaded, find where it was saved and run it. It will install Visual Basic Runtime and the missing files. Afterwards please rerun the installation of Pop-up Inspector. All should work fine and without any further issue.