Help Needed UE4 v 4.15.3 Crashing When Opening a Project

Hi All,

Not sure whats going on, everything has been fine until now. Every time I try and open my project, I get the below crash report. Any Ideas?

LoginId:9e5f6106b24710a5fc9c60ab9355f381
EpicAccountId:312fb2cc3eba4128addc48447efbc389

SEGV_MAPERR at 0x25467a000

_platform_memmove$VARIANT$Haswell Address = 0x7fffbbb57ec9 (filename not found) [in libsystem_platform.dylib]
DrawPrimitiveUP(FRHICommandList&, unsigned int, unsigned int, void const*, unsigned int) Address = 0x102d9cb20 (filename not found) [in UE4Editor-Engine.dylib]
FBatchedElements::Draw(FRHICommandList&, ERHIFeatureLevel::Type, bool, FSceneView const&, bool, float, TRefCountPtr<FRHITexture2D>, EBlendModeFilter::Type) const Address = 0x102d97a22 (filename not found) [in UE4Editor-Engine.dylib]
FSimpleElementCollector::DrawBatchedElements(FRHICommandList&, FSceneView const&, TRefCountPtr<FRHITexture2D>, EBlendModeFilter::Type) const Address = 0x103b8c781 (filename not found) [in UE4Editor-Engine.dylib]
FDeferredShadingSceneRenderer::RenderEditorPrimitives(FRHICommandList&, FViewInfo const&, bool&) Address = 0x1111ca377 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::RenderBasePass(FRHICommandListImmediate&) Address = 0x1111c9d19 (filename not found) [in UE4Editor-Renderer.dylib]
FDeferredShadingSceneRenderer::Render(FRHICommandListImmediate&) Address = 0x1112b0377 (filename not found) [in UE4Editor-Renderer.dylib]
FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand::DoTask(ENamedThreads::Type, TRefCountPtr<FGraphEvent> const&) Address = 0x1118502ac (filename not found) [in UE4Editor-Renderer.dylib]
TGraphTask<FRendererModule::BeginRenderingViewFamily(FCanvas*, FSceneViewFamily*)::EURCMacro_FDrawSceneCommand>::ExecuteTask(TArray<FBaseGraphTask*, FDefaultAllocator>&, ENamedThreads::Type) Address = 0x1118c16d9 (filename not found) [in UE4Editor-Renderer.dylib]
FNamedTaskThread::ProcessTasksNamedThread(int, bool) Address = 0x1014f4232 (filename not found) [in UE4Editor-Core.dylib]
FNamedTaskThread::ProcessTasksUntilQuit(int) Address = 0x1014f0185 (filename not found) [in UE4Editor-Core.dylib]
FTaskGraphImplementation::ProcessThreadUntilRequestReturn(ENamedThreads::Type) Address = 0x1014eca51 (filename not found) [in UE4Editor-Core.dylib]
RenderingThreadMain(FEvent*) Address = 0x1073c5b62 (filename not found) [in UE4Editor-RenderCore.dylib]
FRenderingThread::Run() Address = 0x1073d9037 (filename not found) [in UE4Editor-RenderCore.dylib]
FRunnableThreadPThread::Run() Address = 0x10154bb60 (filename not found) [in UE4Editor-Core.dylib]
FRunnableThreadPThread::_ThreadProc(void*) Address = 0x10150e630 (filename not found) [in UE4Editor-Core.dylib]
_pthread_body Address = 0x7fffbbb5e93b (filename not found) [in libsystem_pthread.dylib]
_pthread_body Address = 0x7fffbbb5e887 (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7fffbbb5e08d (filename not found) [in libsystem_pthread.dylib]

Thanks for the help