(De)activating particle system causes crash

For some reason I cannot reply to your post, Brian, so I am replying here:

The crash window has stopped showing up after I got the symbols. The log in the project’s Saved/Logs contains the following:

[2018.11.15-20.25.18:386][583]LogBlueprintUserMessages: Early PlayInEditor Detection: Level '/Game/FlyingCPP/Maps/FlyingExampleMap.FlyingExampleMap:PersistentLevel' has LevelScriptBlueprint '/Game/FlyingCPP/Maps/FlyingExampleMap.FlyingExampleMap:PersistentLevel.FlyingExampleMap' with GeneratedClass '/Game/FlyingCPP/Maps/FlyingExampleMap.FlyingExampleMap_C' with ClassGeneratedBy '/Game/FlyingCPP/Maps/FlyingExampleMap.FlyingExampleMap:PersistentLevel.FlyingExampleMap'
[2018.11.15-20.25.18:416][583]LogPlayLevel: PlayLevel: No blueprints needed recompiling
[2018.11.15-20.25.18:540][583]PIE: New page: PIE session: FlyingExampleMap (Nov 15, 2018, 8:25:18 PM)
[2018.11.15-20.25.18:541][583]LogPlayLevel: Creating play world package: /Game/FlyingCPP/Maps/UEDPIE_0_FlyingExampleMap
[2018.11.15-20.25.18:581][583]LogWindows: Windows GetLastError: The operation completed successfully. (0)
[2018.11.15-20.26.19:266][583]LogWindows: Error: === Critical error: ===
[2018.11.15-20.26.19:266][583]LogWindows: Error: 
[2018.11.15-20.26.19:266][583]LogWindows: Error: Assertion failed: GetWorld() [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\Engine\Private\Particles\ParticleComponents.cpp] [Line: 5842] 
[2018.11.15-20.26.19:266][583]LogWindows: Error: 
[2018.11.15-20.26.19:266][583]LogWindows: Error: 
[2018.11.15-20.26.19:266][583]LogWindows: Error: 
[2018.11.15-20.26.19:266][583]LogWindows: Error: 
[2018.11.15-20.26.19:342][583]LogExit: Executing StaticShutdownAfterError
[2018.11.15-20.26.20:238][583]LogWindows: FPlatformMisc::RequestExit(1)
[2018.11.15-20.26.20:296][583]Log file closed, 11/15/18 20:26:20

I have not been able to find any other logs. Is there perhaps some other place I should be looking? Thanks for your help.