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AI causing editor crash

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    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.

    Access violation - code c0000005 (first/second chance not available)


    UE4Editor_Engine + 9553714 bytes
    UE4Editor_Engine + 9548821 bytes
    UE4Editor_Engine + 21327018 bytes
    UE4Editor_CoreUObject + 1314781 bytes
    UE4Editor_CoreUObject + 1371986 bytes
    UE4Editor_CoreUObject + 1377083 bytes
    UE4Editor_CoreUObject + 1316120 bytes
    UE4Editor_CoreUObject + 1377083 bytes
    UE4Editor_CoreUObject + 1375095 bytes
    UE4Editor_Engine + 16659027 bytes
    UE4Editor_Engine + 9740591 bytes
    UE4Editor_Engine + 9430966 bytes
    UE4Editor_Engine + 9519113 bytes
    UE4Editor_Engine + 8664474 bytes
    UE4Editor_Engine + 8995213 bytes
    UE4Editor_Engine + 5157575 bytes
    UE4Editor_UnrealEd + 1464870 bytes
    UE4Editor_UnrealEd + 5375494 bytes
    UE4Editor!FEngineLoop::Tick() + 3555 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launchengineloop.cpp:2091]
    UE4Editor!GuardedMain() + 476 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\launch.cpp:132]
    UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
    UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.2\engine\source\runtime\launch\private\windows\launchwindows.cpp:207]
    UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
    Any help on this would be greatly appreciated, Thanks.
    Shield Health System// Beams and lasers pack //Shield Material pack

    Anyone got any ideas?
    Shield Health System// Beams and lasers pack //Shield Material pack


      No one at all knows?
      Shield Health System// Beams and lasers pack //Shield Material pack


        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.