This is an internal editor crash accessing a resource for the startup tutorial. We’ll have to figure out why it is crashing here. In the mean time I suggest you try this to work around it:
Navigate to your engine install directory and find \Engine\Config\BaseEditorSettings.ini. Then delete the line under
[/Script/IntroTutorials.EditorTutorialSettings]
that says
+StartupTutorial=/Engine/Tutorial/Basics/LevelEditorAttract.LevelEditorAttract_C
Save the file and start the editor.
Let us know if that works around the problem for now