Quote Originally Posted by jmcilhinney View Post
Are you changing the ProductCode of the Setup project?
Yes
I also have "RemovePreviousVersions" set to True and I tried it both being backward compatible GUID with VS 2008 generation being set to true and tried it being set to false.
For whatever reason, the 2nd installer does not remove the first installation and does not overwrite the first installation's files.

I'm in the process of setting up an XP VM to see if this problem is just a Win7 issue or not too.