Crash while unhiding streaming level in multiplayer

Curs0
Thu, 24 Aug 2017 12:54:13 +0000
Blueprint

I’ve already posted this issue a few months ago: we were supposing to had found a solution but the problem still here.

I was able to reproduce the crash in 4.16 and 4.17 as well:

here is test project (test project from Sean Flint)

1. just open the project and fire play

2. take a cup of coffee and wait a couple of minutes

Blueprint will cycle showing/hiding sublevel every 2secs until engine will crash with following error:

Assertion failed: WorldSettings [File:D:\Build++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Engine\Private\Level.cpp] [Line: 435]

in log you will find several warnings like this:

LogNet: Warning: UActorChannel::ProcessBunch: SerializeNewActor failed to find/spawn actor. Actor: WorldSettings /Game/Developers/massi/Collections/UEDPIE_2_SubLevel.SubLevel:PersistentLevel.WorldSettings, Channel: 10
LogNet: Server connection received: ActorChannelFailure

Our project crash any time a level is reloaded with same stack trace…

Is this a bug or I’m doing something wrong?
Any suggested workarounds?

Thanks in advance

m.

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