I think at this point, it would be easier to search for the .exe name on the users computer. If found then I could run a un-install. In addition I could then delete all the folders/files associated with the older version. I tried to copy "Detect Previous Application B" into my setup, but I was unable to do so. I wanted to use this script and call it before the install runs on the new version.
I know you can include scripts I just can't figure out how to include them.

thanks,