Crash on opening EXE and Launching in Editor

Hello All,

Prior to today I could build the game fine with no issues, however all of a sudden I cant Launch or Build my game without it crashing immediately.

Here is the error:

53122-capture2.png

I am running 4.8.3 on Windows 10 and have tested on another Windows 8.1 PC running the same version of UE.

As for the project itself it is a C++ project with no C++ code thus far. Have only been playing around with blueprints.

Has anybody got any suggestions on what I could do to diagnose the issue?

Cheers!

Fixed it by going to the projects DefaultEngine.ini and changing the GameInstanceClass variable.
It seemed to be pointing to an old file despite the fact I had clicked fixed redirectors.
On top of that, the Settings Window said it was pointing to the correct file… Odd.