I was about to go through and upgrade a whole host of old K2.net 2003 workflows. When I notice that in the context menu there was an option to upgrade.
contextmenu1

I thought it was nice that K2 was detailed enough to put something in this small and useful. So I clicked on it and Visual Studio 2010 opened up. As of right now, K2 blackpearl doesn’t support 2010 so no upgrade. So instead of just opening Visual Studio 2008 and upgrading that way, I decided it was time to fix the registry so it would open 2008 automatically. Open Registry Editor and go to the following path HKEY_CLASSES_ROOT\K2Studio.2\Command. There you will find in the data field “devenv.exe” “%1″. You just need to change it to add the path were Visual Studio 2008 is installed and it should work from there on out. Hopefully this will help someone else who is having the same problem.

k2studio1regedit


UPDATE: Apparently the K2 for Visual Studio 2010 components were released on 7/14.