I previously sent this in an email with the link given at the bottom of the given stack trace but never got any response. Thought I'd try here.
Current member / type: System.Collections.Generic.IEnumerable`1<System.Int32> TryYieldTest.Class1::Test()
File path: C:\Projects\TryYieldTest\TryYieldTest\bin\Debug\TryYieldTest.dll
Product version: 2015.2.623.1
Exception in: System.Collections.Generic.IEnumerable<u<System.Int32>> Test()
Seems to be caused by a yield break inside of a try.