Crash opening projects from GitHub master branch

UE4Editor-Core.dll!rml::internal::Block::findObjectSize()
UE4Editor-Core.dll!FMallocTBB::Realloc() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\core\private\hal\malloctbb.cpp:70]
UE4Editor-Core.dll!FHeapAllocator::ForAnyElementType::ResizeAllocation() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\core\public\containers\containerallocationpolicies.h:344]
UE4Editor-SlateRHIRenderer.dll!TArray<TSharedPtr<FSlateDynamicImageBrush,0>,FDefaultAllocator>::Emplace<TSharedPtr<FSlateDynamicImageBrush,0> const & __ptr64>() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\core\public\containers\array.h:1745]
UE4Editor-SlateRHIRenderer.dll!FSlateRHIRenderer::RemoveDynamicBrushResource() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:1090]
UE4Editor-SlateCore.dll!FSlateDynamicImageBrush::ReleaseResource() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\slatecore\private\brushes\slatedynamicimagebrush.cpp:37]
UE4Editor-IntroTutorials.dll!FTutorialListEntry_Category::~FTutorialListEntry_Category() [c:\users\ben\documents\github\unrealengine\engine\source\editor\introtutorials\private\stutorialsbrowser.cpp:85]
UE4Editor-IntroTutorials.dll!FTutorialListEntry_Category::`scalar deleting destructor'()
UE4Editor-IntroTutorials.dll!TArray<TSharedPtr<ITutorialListEntry,0>,FDefaultAllocator>::~TArray<TSharedPtr<ITutorialListEntry,0>,FDefaultAllocator>() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\core\public\containers\array.h:577]
UE4Editor-IntroTutorials.dll!FTutorialListEntry_Category::~FTutorialListEntry_Category() [c:\users\ben\documents\github\unrealengine\engine\source\editor\introtutorials\private\stutorialsbrowser.cpp:87]
UE4Editor-IntroTutorials.dll!FTutorialListEntry_Category::`scalar deleting destructor'()
UE4Editor-IntroTutorials.dll!STutorialsBrowser::~STutorialsBrowser()
UE4Editor-IntroTutorials.dll!STutorialsBrowser::`scalar deleting destructor'()
UE4Editor-Slate.dll!SDockTab::~SDockTab()
UE4Editor-IntroTutorials.dll!SDockTab::`scalar deleting destructor'()
UE4Editor-IntroTutorials.dll!UEditorTutorial::HandleTutorialLaunched() [c:\users\ben\documents\github\unrealengine\engine\source\editor\introtutorials\private\editortutorial.cpp:63]
UE4Editor-IntroTutorials.dll!STutorialRoot::LaunchTutorial() [c:\users\ben\documents\github\unrealengine\engine\source\editor\introtutorials\private\stutorialroot.cpp:178]
UE4Editor-IntroTutorials.dll!FIntroTutorials::LaunchTutorial() [c:\users\ben\documents\github\unrealengine\engine\source\editor\introtutorials\private\introtutorials.cpp:458]
UE4Editor-IntroTutorials.dll!FIntroTutorials::MaybeOpenWelcomeTutorial() [c:\users\ben\documents\github\unrealengine\engine\source\editor\introtutorials\private\introtutorials.cpp:325]
UE4Editor-IntroTutorials.dll!FIntroTutorials::MainFrameLoad() [c:\users\ben\documents\github\unrealengine\engine\source\editor\introtutorials\private\introtutorials.cpp:273]
UE4Editor-IntroTutorials.dll!TBaseRawMethodDelegateInstance<0,FIntroTutorials,TTypeWrapper<void> __cdecl(TSharedPtr<SWindow,0>,bool)>::Execute() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:491]
UE4Editor-IntroTutorials.dll!TBaseRawMethodDelegateInstance<0,FIntroTutorials,void __cdecl(TSharedPtr<SWindow,0>,bool)>::ExecuteIfSafe() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:580]
UE4Editor-MainFrame.dll!TBaseMulticastDelegate<void,TSharedPtr<SWindow,0>,bool>::Broadcast() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:809]
UE4Editor-MainFrame.dll!FMainFrameModule::CreateDefaultMainFrame() [c:\users\ben\documents\github\unrealengine\engine\source\editor\mainframe\private\mainframemodule.cpp:204]
UE4Editor-UnrealEd.dll!EditorInit() [c:\users\ben\documents\github\unrealengine\engine\source\editor\unrealed\private\unrealed.cpp:115]
UE4Editor.exe!GuardedMain() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor.exe!GuardedMainWrapper() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor.exe!WinMain() [c:\users\ben\documents\github\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor.exe!__tmainCRTStartup() [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
kernel32.dll
ntdll.dll
ntdll.dll