Symptoms

Installing Visual Studio 2015 break the K2
 

Diagnoses

I tried to install VS2015 in the same environment with K2 but it breaks the K2 object browser on VS2010 and opening K2 project throw an error "... project type (.k2proj) is not supported by this version of this application.". I tried to salvage the smartobjects and smartforms using "K2 Package and Deployment" but it throw an exception.

I have tried to restart the environment, use K2 blackpearl Setup Manager to repair and configure but show no result.
Removing the "K2 for Visual Studio Core" and "K2 for Visual Studio 2010" and reinstall with "K2 Installation Package 4.6.9.exe" does not fix this.
 

Resolution

A coldfix was provided for this issue.   Please log a support ticket to request this coldfix.