Crash when switching scenes with cloth

Unity Engine
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1

Hi there,

Not sure if I should post this in Networking or Physics, since it seems to be both, but here I go anyway.

We have a multiplayer game with multiple rounds. After the last round, we return to the lobby using ServerReturnToLobby. At this point, I presume, our character objects are destroyed.

If any of these characters are wearing a cape (cloth component), the client, not the server, crashes. We suspect that something goes wrong with the order of destroying things, but that’s just a guess.

I’ve included the full log, but here’s the stacktrace:

========== OUTPUTING STACK TRACE ==================

0x00000001427EB480 (Unity) physx::Scb::Cloth::wakeUp
0x0000000140D043E9 (Unity) Unity::Cloth::LateUpdate
0x0000000140DD3336 (Unity) BaseBehaviourManager::CommonUpdate
0x0000000140DD340F (Unity) LateBehaviourManager::Update
0x00000001410B5563 (Unity) InitPlayerLoopCallbacks'::41’::PreLateUpdateScriptRunBehaviourLateUpdateRegistrator::Forward
0x00000001410B334B (Unity) PlayerLoop
0x000000014010835E (Unity) Application::UpdateScene
0x000000014010C98F (Unity) Application::UpdateSceneIfNeeded
0x0000000140130A9F (Unity) Application::TickTimer
0x0000000141A87E5D (Unity) MainMessageLoop
0x0000000141A89827 (Unity) WinMain
0x0000000141CEC8BC (Unity) __tmainCRTStartup
0x00007FF853992774 (KERNEL32) BaseThreadInitThunk
0x00007FF856410D51 (ntdll) RtlUserThreadStart

========== END OF STACKTRACE ===========

3175001–241975–Editor.txt (132 KB)

2

hey,Phalcon, I have met same problems like you. Do you have any clue or had solved the problems?

3

Hi there, we reported it as a bug and it turned out to be a problem on Unity’s side. It has since been fixed for us, so if you have the same problem as we did, updating to the latest version would fix it.

4

our version is 5.6.0f, which version do you use. Thx for your answer.

5

We are on 2017.1.0f3 at the moment.

6

Hmm, we’ve just done some more testing, and it’s not fixed yet.

We’re going to try deleting the cloth objects before the scene changes, will report back when we have more info

7

I appreciate that.

8

In our specific example, if the lobbyplayers don’t have capes, (so I’m guessing the wakeup isn’t called?), there seems to be no issue. So if the scene you are loading into has no cloth component at the start, it seems to go fine. Not sure what happens if you enable the cloth components later though.

9

I joined the unity technical speech yesterday,they suggest us do not use cloth system, i think maybe the cloth system still has some issues cannot solve. So i try to use dynamicBone to instead of cloth system.