Unreal 4.7.0 Preview 7 - Crash on replication

Development Programming & Scripting
1

We have a minimal example program made by starting with the First Person Example, and then doing blueprint session.

Worked ok, then set the boxes in the world to have physics movement replicated. Now it crashes on the server.
The log says…

[2015.02.12-23.38.09:849][545]LogOutputDevice: === Handled error: ===

Ensure condition failed: ConsiderList.Num() < ConsiderList.Max() [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\Engine\Private\NetworkDriver.cpp] [Line: 1950]

Stack: 
MPTestProj.exe!FWindowsPlatformStackWalk::StackWalkAndDump() (0x00007ff650b6c5a6) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsplatformstackwalk.cpp:174]
MPTestProj.exe!FDebug::EnsureFailed() (0x00007ff650932d77) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:279]
MPTestProj.exe!UNetDriver::ServerReplicateActors() (0x00007ff652791c79) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\networkdriver.cpp:1951]
MPTestProj.exe!UNetDriver::TickFlush() (0x00007ff65279b247) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\networkdriver.cpp:161]
MPTestProj.exe!USteamNetDriver::TickFlush() (0x00007ff6530e73ee) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\online\onlinesubsystemsteam\private\steamnetdriver.cpp:141]
MPTestProj.exe!TBaseUObjectMethodDelegateInstance<0,UNetDriver,void __cdecl(float)>::ExecuteIfSafe() (0x00007ff65275ac47) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:772]
MPTestProj.exe!TBaseMulticastDelegate<void,float>::Broadcast() (0x00007ff652b0d8b4) + 14 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:1030]
MPTestProj.exe!UWorld::Tick() (0x00007ff652b468c0) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\leveltick.cpp:1240]
MPTestProj.exe!UGameEngine::Tick() (0x00007ff65236aa25) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\gameengine.cpp:832]
MPTestProj.exe!FEngineLoop::Tick() (0x00007ff65087bdcd) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:2257]
MPTestProj.exe!GuardedMain() (0x00007ff65086d40c) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:142]
MPTestProj.exe!GuardedMainWrapper() (0x00007ff65086d45a) + 5 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
MPTestProj.exe!WinMain() (0x00007ff65087dbe9) + 17 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
MPTestProj.exe!__tmainCRTStartup() (0x00007ff65332e361) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
KERNEL32.DLL!UnknownFunction (0x00007ffffc9a15dd) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007fffff1843d1) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007fffff1843d1) + 0 bytes [UnknownFile:0]

[2015.02.12-23.38.10:147][545]LogWindows: Could not start CrashReportClient.exe
[2015.02.12-23.38.10:147][545]LogMemory: Platform Memory Stats for WindowsNoEditor
[2015.02.12-23.38.10:147][545]LogMemory: Process Physical Memory: 408.01 MB used, 408.44 MB peak
[2015.02.12-23.38.10:147][545]LogMemory: Process Virtual Memory: 352.55 MB used, 352.86 MB peak
[2015.02.12-23.38.10:147][545]LogMemory: Physical Memory: 6634.71 MB used, 16303.29 MB total
[2015.02.12-23.38.10:147][545]LogMemory: Virtual Memory: 810.37 MB used, 134217728.00 MB total
[2015.02.12-23.38.27:820][545]LogWindows: === Critical error: ===
Ensure condition failed: ConsiderList.Num() < ConsiderList.Max() [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\Engine\Private\NetworkDriver.cpp] [Line: 1950]

I have a zip file if needed.

2

Hi SND R Keene,

Sure, the full Log and any other files you have could be useful. Could you post your dxdiag (system specs), Callstack, Log, and Dmp files?

Take a look at the link below for direction on how to find these files.

Also, if the issue is reproducible in a minimal project, please provide detailed repro steps or a small test project that crashes.

3

Hi SND R Keene,

We haven’t heard back from you in a few days, so we are marking this post as resolved for tracking purposes. If you’re still experiencing this issue, please feel free to post back here with the additional information and it will reopen the report.

Cheers,

TJ