Can't find file for asset. /Script/BehaviorTreeEditor

I was editing AI related stuff (behavior trees, tasks, services, etc) and all seemed well. After restarting project I got a bunch of load errors like this:

LogLinker:Warning: Can't find file '/Script/BehaviorTreeEditor'  

LogLinker:Warning: Can't find file for asset '/Script/BehaviorTreeEditor' while loading Enemy_behavior.uasset.  

LoadErrors:Error: Enemy_behavior : Can't find file for asset. /Script/BehaviorTreeEditor

Said behavior tree can be opened but it only contains root node, any additional nodes are discarded. controller also mentioned in error log seems ok, its RunBehaviorTree node still pointing at proper asset. I’m using 4.4.0-2255576 (Binary branch).

I’m getting exact same warning.

Hey all,

This issue has been reported in another post, but we are still looking for cause of issue. Please post as many details as you can in following post:

Thanks!