There is no solution offered in the comment below and I am unable to get it working though it is listening on port 7777. The client just doesn’t load.
I receive the following “critical error”
SIGSEGV: invalid attempt to access memory at address 0x3
0x04670797 UE4Editor-Core.dylib!FGenericPlatformMisc::RaiseException(unsigned int) [UnknownFile])
0x04807a33 UE4Editor-Core.dylib!FMacErrorOutputDevice::Serialize(char16_t const*, ELogVerbosity::Type, FName const&) [UnknownFile])
0x048ec5e9 UE4Editor-Core.dylib!FOutputDevice::LogfImpl(char16_t const*, ...) [UnknownFile])
0x0486c5fe UE4Editor-Core.dylib!AssertFailedImplV(char const*, char const*, int, char16_t const*, __va_list_tag*) [UnknownFile])
0x0486c494 UE4Editor-Core.dylib!FDebug::CheckVerifyFailedImpl(char const*, char const*, int, char16_t const*, ...) [UnknownFile])
0x07a3af78 UE4Editor-Engine.dylib!FVirtualTextureChunkDDCCache::Initialize() [UnknownFile])
0x07a3b78d UE4Editor-Engine.dylib!FVirtualTextureChunkStreamingManager::FVirtualTextureChunkStreamingManager() [UnknownFile])
0x06a27a21 UE4Editor-Engine.dylib!FStreamingManagerCollection::FStreamingManagerCollection() [UnknownFile])
0x06a259f8 UE4Editor-Engine.dylib!IStreamingManager::Get() [UnknownFile])
0x03f31e70 UE4Editor!FEngineLoop::Exit() [UnknownFile])
0x03f32773 UE4Editor!GuardedMain(char16_t const*) [UnknownFile])
0x03f4efcf UE4Editor!-[UE4AppDelegate runGameThread:] [UnknownFile])
0x047da331 UE4Editor-Core.dylib!-[FCocoaGameThread main] [UnknownFile])
0x3119f7a2 Foundation!__NSThread__start__() [UnknownFile])
0x68d10109 libsystem_pthread.dylib!_pthread_start() [UnknownFile])
0x68d0bb8b libsystem_pthread.dylib!thread_start() [UnknownFile])