vsixmanifest for all: VS 2010, 2012 and 2013
What you have is the version 2 VSIX manifest, which is not compatible with Visual Studio 2010. Later Visual Studio versions respect version 1 of the manifest, so in order to support all 3 Visual Studio versions with a single manifest, you’ll have to convert it to v1.0 manually (and make sure NOT to edit … Read more