U4 Editor crash and I can't edit my project anymore

Editor version: 4.11.2
System: OS X 10.11.3, MacBook Pro (Retina, 15-inch, Mid 2015)

When I navigate in the viewport or drag something into it, the editor 100% crash! And now I can’t do my work anymore.

HERE the logs,

MachineId:CBE4FC63F74C637EB1607F9B6E792E9B
EpicAccountId:[XXXXXX]1bf8

SEGV_MAPERR at 0x3

FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x10782431b [/Users/build/BuildFarm/build_++UE4+Release-4.11/Engine/Source/Runtime/Core/Private/GenericPlatform/GenericPlatformMisc.cpp, line 294] [in UE4Editor-Core.dylib]
FOutputDeviceMacError::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&) Address = 0x1079b5ee6 [/Users/build/BuildFarm/build_++UE4+Release-4.11/Engine/Source/Runtime/Core/Private/Mac/MacPlatformOutputDevices.cpp, line 93] [in UE4Editor-Core.dylib]
FOutputDevice::Logf(wchar_t const*, ...) Address = 0x107aaa6f7 [/Users/build/BuildFarm/build_++UE4+Release-4.11/Engine/Source/Runtime/Core/Private/Misc/OutputDevice.cpp, line 149] [in UE4Editor-Core.dylib]
FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...) Address = 0x107a789c4 [Runtime/Core/Public/Containers/ContainerAllocationPolicies.h, line 340] [in UE4Editor-Core.dylib]
___ZN17FMetalCommandList6CommitEPU27objcproto16MTLCommandBuffer11objc_objectb_block_invoke Address = 0x13b6e6e20 [/Users/build/BuildFarm/build_++UE4+Release-4.11/Engine/Source/Runtime/Apple/MetalRHI/Private/MetalCommandList.cpp, line 51] [in UE4Editor-MetalRHI.dylib]
-[_MTLCommandBuffer didComplete:error:] Address = 0x7fff93f285c8 (filename not found) [in Metal]
-[MTLIOAccelCommandBuffer didComplete:error:] Address = 0x7fff93f00ed1 (filename not found) [in Metal]
-[_MTLCommandQueue commandBufferDidComplete:timestamp:error:] Address = 0x7fff93f2c135 (filename not found) [in Metal]
ioAccelCommandQueueBlockFenceCallback Address = 0x7fff8b51a330 (filename not found) [in IOAccelerator]
IODispatchCalloutFromCFMessage Address = 0x7fff925a6cee (filename not found) [in IOKit]
_IODispatchCalloutWithDispatch Address = 0x7fff925a6d6d (filename not found) [in IOKit]
dispatch_mig_server Address = 0x7fff8e908a4c (filename not found) [in libdispatch.dylib]
_dispatch_client_callout Address = 0x7fff8e8f433f (filename not found) [in libdispatch.dylib]
_dispatch_source_latch_and_call Address = 0x7fff8e904676 (filename not found) [in libdispatch.dylib]
_dispatch_source_invoke Address = 0x7fff8e8f89b7 (filename not found) [in libdispatch.dylib]
_dispatch_queue_drain Address = 0x7fff8e8f9134 (filename not found) [in libdispatch.dylib]
_dispatch_queue_invoke Address = 0x7fff8e8ff63b (filename not found) [in libdispatch.dylib]
_dispatch_root_queue_drain Address = 0x7fff8e8f7c87 (filename not found) [in libdispatch.dylib]
_dispatch_worker_thread3 Address = 0x7fff8e8f7a34 (filename not found) [in libdispatch.dylib]
_pthread_wqthread Address = 0x7fff9253868f (filename not found) [in libsystem_pthread.dylib]
start_wqthread Address = 0x7fff92536365 (filename not found) [in libsystem_pthread.dylib]

Hello,

After investigation, it seems that this is a known issue, UE-30710. This issue is currently under investigation by our developers, however there is no timeline for when a fix will be released. Thank you for your report.

Have a great day