I'm trying to divide my solution by three configurations:
Development
Testing
Release
All above will have different publishing location, so users can work with release, do their test in testing and see what is new in development release. All three versions will be build with different name postfixes and icons and installed on each user workstation.
For now I get :
Unable to install this application because an application with the same identity is already installed. To install this application, either modify the manifest version for this application or uninstall the preexisting application."
I can't even install this more than once at one workstation.
So What can I do to achive this?
You can not install the same application multiple times unless you change the deployment. The easiest way to do this is by changing the assembly name.