i just started transfering all my VB and VBA code from 2013 to 2015 and i can get any code to consistantly work. i now am getting the error "Fatal Error" Unhandled access violation reading 0x000b Exception at cbce2745h" it is the exact same modules i was using in 2013. i also patched my CAD fully using the Application manager. I am testing on 2 differnt systems and they both are crashing out. Also when this is happening it is crashing out and exiting Autocad.
Unfortunately some of the API calls and other stuff are handled differently in 2015 than they were in 2013. It's an Autodesk thing as I had the same issue going from 2013 to 2014. Same OS, same computer.