anyone know why 4.2 behaviour tree crashes
in the Behaviour trees some of my Blueprints will not execute in version 4.2 and they are labled with a prefix REINST_ i have tried replaceing all the Blueprints and this works fine until i reload the project and the Behaviour trees revert back to the same state. if i double click the node to edit the Blueprint i get a Crash
SIGSEGV: invalid attempt to access memory at address 0x3
EngineCrashHandler(FGenericCrashContext const&) Address = 0xe00978f (filename not found) [in UE4Editor] PlatformCrashHandler(int, __siginfo*, void*) Address = 0xe2ae0bf (filename not found) [in UE4Editor-Core.dylib] _sigtramp() Address = 0x9087e5aa (filename not found) [in libsystem_platform.dylib]
Try making a new behavior tree in 4.2, recreating what you had. It worked for me. There seems to be a problem upgrading trees from 4.1
Epic specifically warned this might happen in one of their twitch streams, since the behavior trees are still experimental and all. It's probably a bad idea to make a really elaborate tree you don't want to remake at this point in time.
Finally some good news! I built the editor from the source (it was tagged as version 4.2.1) and indeed, no more problems. So hopefully it'll be fixed for everyone after the hotfix next week!
answered Jun 12 '14 at 07:20 PM
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