RemovePreviousVersions doesn't work

I have a project and a setup package and it all works great. It installs on PCs perfectly. That is, until, I or somebody else goes to re-install it over the top of a previous version.

Upon running the setup.exe, a message box appears reading "another version of this program already exists, you need to use add/remove programs and remove this one first".

I then looked at the properties for my setup program in my solution and saw that there's a property called:

RemovePreviousVersions

I then set this to True and tried again, but this made no difference.

Has anybody else experienced problems with the VB.Net setup projects?

Make sure you are versioning your setups. The default is always 1.0.0

Look at the properties for you setup project and it is the last item in the list - easy to miss.