Unable to launch application after deploying

I have written a windows application in visual studio 2015 and it all works perfectly. I went through the publish wizard and deployed the program to C:\Chem.

In Chem I can see a folder "Application Files" together with an application manifest file and a setup file.

When I run the setup file I get a window saying that I can't start the application from this location because it is already installed from a different location - but it isn't!!

Does anyone have any idea what I'm missing?

You might try searching your registry in case it is registered in a location where you don't think it is.

Thanks. The confusing thing was that the detail report said that it was located on drive F; but I don't have a drive F.

I did eventually find an installation lurking in a remote corner and removed it. Problem solved.