Excel won't open/launch VSTO AddIn when running in debug mode of Visual Studio 2010

Question

I had previously installed the VS11 beta, and had some issues with my Visual Studio 2010 instance, which you can see here how they were resolved: Excel AddIn Click Once depl

Answer 1

When you run through Visual Studio 2010 does it hits the breakpoint in the addin_startup event. If not try to debug this way

Hope this helps you