MAC: Crash summoning context menu

Crashes only happends on projects that are almost done(2 projects and both are BP only), does not crash when start new project. Log is upload on pastebin, link to log: [Link Removed]

Crashes are random, sometimes on clicking Blueprint, sometimes when loading a map or editing UMG. Crashes happends after few minutes.

MachineId:000F000E00200007001F0209E53C1C5B
EpicAccountId:35692d719d60463c99fa29ce8c167a26

Generating report for minidump

Application version 4.6.0-2369412+++depot+UE4-Releases+4.6
... built from changelist 2369412
... based on label ++depot+UE4-Releases+4.6

OS version 10.10.1.19237
Running 4 x64 processors
Exception was "SIGSEGV: invalid attempt to access memory at address 0x3"

Source context from ""

<SOURCE START>
<SOURCE END>

<CALLSTACK START>
FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...) Address = 0x10fe1e710 (filename not found) [in UE4Editor-Core.dylib]
FSlateApplication::GeneratePathToWidgetChecked(TSharedRef<SWidget const, (ESPMode)0>, FWidgetPath&, EVisibility) const Address = 0x114aababd (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::PushMenu(TSharedRef<SWidget, (ESPMode)0> const&, TSharedRef<SWidget, (ESPMode)0> const&, FVector2D const&, FPopupTransitionEffect const&, bool, bool, FVector2D const&, FVector2D const&) Address = 0x114aabc97 (filename not found) [in UE4Editor-Slate.dylib]
SGraphPanel::SummonContextMenu(FVector2D const&, FVector2D const&, UEdGraphNode*, UEdGraphPin*, TArray<UEdGraphPin*, FDefaultAllocator> const&, bool) Address = 0x11bec4a00 (filename not found) [in UE4Editor-GraphEditor.dylib]
FDragConnection::DroppedOnPanel(TSharedRef<SWidget, (ESPMode)0> const&, FVector2D, FVector2D, UEdGraph&) Address = 0x11bec413b (filename not found) [in UE4Editor-GraphEditor.dylib]
SGraphPanel::OnDrop(FGeometry const&, FDragDropEvent const&) Address = 0x11bf3b3c5 (filename not found) [in UE4Editor-GraphEditor.dylib]
FSlateApplication::ProcessMouseButtonUpEvent(FPointerEvent&) Address = 0x114ac83cb (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::OnMouseUp(EMouseButtons::Type) Address = 0x114ac7229 (filename not found) [in UE4Editor-Slate.dylib]
FMacApplication::ProcessNSEvent(NSEvent*) Address = 0x10fd77b2b (filename not found) [in UE4Editor-Core.dylib]
FMacApplication::ProcessEvent(FMacEvent const*) Address = 0x10fd76e5b (filename not found) [in UE4Editor-Core.dylib]
FCocoaRunLoopSource::Process(__CFString const*) Address = 0x10fd994fc (filename not found) [in UE4Editor-Core.dylib]
-[FCocoaRunLoopSourceInfo() Address = 0x10fd6ef71 (filename not found) [in UE4Editor-Core.dylib]
_CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION_() Address = 0x7fff9195e661 (filename not found) [in CoreFoundation]
__CFRunLoopDoSources0() Address = 0x7fff919507ed (filename not found) [in CoreFoundation]
__CFRunLoopRun() Address = 0x7fff9194fe1f (filename not found) [in CoreFoundation]
CFRunLoopRunSpecific() Address = 0x7fff9194f838 (filename not found) [in CoreFoundation]
FMacPlatformMisc::PumpMessages(bool) Address = 0x10fd7b0bf (filename not found) [in UE4Editor-Core.dylib]
FEngineLoop::Tick() Address = 0x10fc59dbb (filename not found) [in UE4Editor]
GuardedMain(wchar_t const*) Address = 0x10fc5d081 (filename not found) [in UE4Editor]
-[UE4AppDelegate() Address = 0x10fc65fa5 (filename not found) [in UE4Editor]
-[FCocoaGameThread() Address = 0x10fd6f184 (filename not found) [in UE4Editor-Core.dylib]
_NSThreadmain_() Address = 0x7fff98a08b7a (filename not found) [in Foundation]
_pthread_body() Address = 0x7fff8c82b2fc (filename not found) [in libsystem_pthread.dylib]
_pthread_body() Address = 0x7fff8c82b279 (filename not found) [in libsystem_pthread.dylib]
thread_start() Address = 0x7fff8c8294b1 (filename not found) [in libsystem_pthread.dylib]
<CALLSTACK END>