Hi, I can’t open my level blueprint [108957-level+blueprint+broken.png] i have this problem only with level blueprint. Indeed, other blueprint works. I tried to create a new project and unistall/reinstall but i have always this black sreen. Thanks for your help.

Have you ensured that your graphics card drivers are fully up to date? If you haven’t checked in a while I’d recommend updating them to see if this resolves the issue.