Compatibility Mode

When you migrate Sharepoint and K2 you may run into a problem where all K2 links for your site just give you “Value cannot be null.  Parameter name: token.” I end up having issue after just changing site collection compatibility range (for testing purposes, here is how to do it) and then creating new site within … “Value cannot be null. Parameter name: token” for K2 links on SP2013 site in SP2010 compatibility mode