I am trying to update vspackage which will be used for visual studio 2015.
vspackage I created in visual studio 2013 and works in all previous versions
I updated my dev version with Visual Studio 2015. Install the SDK for Visual Studio 2015.
I update the solution and the entire project to visual studio 2015. Then I compile the project.
I finally double click on the vsix package and get the following error from the bin debug folder of my vsix project ...

I do not see the menu for my renewal in 2015 ...
I do in 2013 and below.
I am sure there is something simple that I am doing wrong.
I also tried to create a new VSIX visual studio project for 2015 that works in the debugger, but I do not see my extension when working outside the debugger.