Please follow these instructions to ensure you have the symbols for debugging installed:
Open up the Epic Games Launcher
Click on the Library tab
Click on the yellow and black downward arrow beside Launch
Click on Options
Make sure that there is a check-mark beside 'Editor symbols for debugging'
Press Apply
Once you've done that, it should update the editor for you and this issue should go away. Please let us know if it does not.
J'ai trouvé ça sur le forum d'unreal engine 
Message édité le 14 avril 2018 à 14:39:32 par thisisfear