When a second player join a session it always crash.
[2018.01.12-16.51.02:196][801]LogWindows: Error: === Critical error: ===
[2018.01.12-16.51.02:196][801]LogWindows: Error:
[2018.01.12-16.51.02:196][801]LogWindows: Error: Assertion failed: Property->PropertyFlags & CPF_Net
[File:D:\Build++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\Engine\Private\RepLayout.cpp] [Line: 2975]
[2018.01.12-16.51.02:196][801]LogWindows: Error:
[2018.01.12-16.51.02:196][801]LogWindows: Error:
[2018.01.12-16.51.02:196][801]LogWindows: Error:
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000E9BC9D98 KERNELBASE.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000CCB176D4 UE4Editor-ApplicationCore.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000C191330B UE4Editor-Core.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000C18A47F9 UE4Editor-Core.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000ACB90A4E UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000AC8D9349 UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000AC8D27A5 UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000ABDF0CFD UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000AC903CFC UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000AC9019E6 UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000AC90B4F5 UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:196][801]LogWindows: Error: [Callstack] 0x00000000AC8D065F UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000ABD2CF78 UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000AC77858D UE4Editor-Engine.dll!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000AA956BA6 UE4Editor-UnrealEd.dll!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000AB204AC6 UE4Editor-UnrealEd.dll!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000E0955A26 UE4Editor.exe!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000E0965430 UE4Editor.exe!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000E09654AA UE4Editor.exe!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000E0972379 UE4Editor.exe!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000E0973D57 UE4Editor.exe!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000ED312774 KERNEL32.DLL!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000ED420D51 ntdll.dll!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error: [Callstack] 0x00000000ED420D51 ntdll.dll!UnknownFunction
[2018.01.12-16.51.02:197][801]LogWindows: Error:
[2018.01.12-16.51.02:219][801]LogExit: Executing StaticShutdownAfterError
[2018.01.12-16.51.02:232][801]LogWindows: FPlatformMisc::RequestExit(1)
[2018.01.12-16.51.02:232][801]Log file closed, 01/12/18 14:51:02