Unreal Engine Issues

UE-47948

Error when Compiling an AIController Blueprint Class with an AIPerception Component

Error when Compiling an AIController Blueprint Class with an AIPerception Component

Description

An error populated the output log when Compiling an AIController Blueprint Class with an AIPerception Component.

This is not a Regression, as it Occurs in //UE4/Main.

Steps to Reproduce
  1. Open UE4 Editor
  2. Create a TopDown Project
  3. Open the Output Log
  4. In Content Browser, create a new Blueprint Class with an AIController parent type
  5. Open the newly created Blueprint Class
  6. In the Components Tab, select the + Add Component button and enter "AIPerception"
  7. Compile the blueprint

Results:
An error is displayed within the Output log.
Expected Results:
Blueprint is compiled without warning or error.
Frequency:
3/3

Callstack
[2017.08.01-20.22.55:857][314]LogDirectoryWatcher: A directory notification failed for 'D:/Unreal Projects/MyProject3/Content/', and we were unable to create a new request.
[2017.08.01-20.22.55:893][314]LogScriptCore: Error: Script Msg: A null object was passed as a world context object to UEngine::GetWorldFromContextObject().
[2017.08.01-20.22.55:893][314]LogScriptCore: Error: Script call stack:
	[Empty] (FFrame::GetScriptCallstack() called from native code)

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Fixed
ComponentUE - AI
Affects Versions4.18
Target Fix4.17.2
Fix Commit3592743
Main Commit3582334
CreatedAug 1, 2017
ResolvedAug 17, 2017
UpdatedApr 27, 2018
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