Upgrade Add-in project to Visual Studio 2012

Was using Visual Studio Express 2010 with 10.1. With upgrading to 10.2 also moving up to VS Express 2012. But when I open a add-in projected in VS Express 2012 and try to debug the add-in does not get installed.

I updated the options file to point to the 10.2 exe so ArcMap opens when Start Debugging is run. Also updated target version in the config file.

Creating a new add-in project in VS and running debug starts up arcmap and installs the add-in. So I assume there is just some setting somewhere I need to update in my old add-in projects to get it to install when debugging.

Thanks

Michael Nelson