Get “Internal error in the expression evaluator” on “Add watch” function when trying to debug WCF service code (MSVS 2013)

Question

Few days ago I moved my solution to MSVS 2013. It works fine except one thing: when I trying to debug code of my WCF service it works, but when I want to watch state of any

Answer 1

I tried Igal's answer, and it did not work for me, but I found a solution that worked for me. I cleared the Watch and started to add items again. I noticed that if I tried to add item which was not inside current sub or function then an internal error occurred.

I solved the problem by adding other items from inside their subs or functions and there were no errors again.