unreal is crashing when i switch to landscape mode

im getting this crash log when ever i try switch to land scape mode LoginId:16c9df7d45dd3f89d1f3f3a6e8d1e2a4 EpicAccountId:f501ee52c1cc444080f9b10cd0328a3d Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000018 UnrealEditor_LandscapeEditor UnrealEditor_LandscapeEditor UnrealEditor_LandscapeEditor UnrealEditor_LandscapeEditor UnrealEditor_LandscapeEditor UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor_UnrealEd UnrealEditor_LevelEditor UnrealEditor_LevelEditor UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_Slate UnrealEditor_ApplicationCore UnrealEditor_ApplicationCore UnrealEditor_ApplicationCore UnrealEditor_ApplicationCore user32 user32 UnrealEditor_ApplicationCore UnrealEditor UnrealEditor UnrealEditor UnrealEditor UnrealEditor UnrealEditor kernel32 ntdll