AI causing editor crash

Hey all, I’ve been trying to learn how to set up AI in Unreal 4 for a while now and came across a tutorial for setting up behaviour trees for target point patrolling found here.
After following the tutorial I found trying to either play the level or simulate causes the editor to crash entirely and a few times it’s refused to open the map I’ve been working on.
I’ve followed the tutorial to the letter on this and I’m not sure what might be the cause of this all.
Would anyone have any ideas on what may be causing this?
Here’s the error code I’ve been getting on it.

Any help on this would be greatly appreciated, Thanks.

Anyone got any ideas?

No one at all knows?

This is a very difficult thing to help you with, which is why I guess no one has replied yet. Please try to add a few more details.

Which version of the editor/engine are you using? Behavior trees were previously put under the Beta/Experimental options for a reason.
Can we take a look at your blueprints, blackboard and behavior tree? This is pretty vital for helping you out.

Beyond that, the only hope is that someone from epic knows what that crash report points towards.