I just upated to version 3.1 IDE (windoze).
When I start the emulator, i get a message that it cannot find the msvcr120.dll, and cannot proceed (actually, I get two dialog messages).
I tried this again on a tizen v2.5 IDE, and it still works: no missing dll message.
Haven't tried on ubuntu system yet.
I have tried all of the fixes I found on google, but none seem to work.