Substance will not shut down, crashes on both "red X" and "quit"

Hello @TavC1,

Do you receive a pop-up to send a crash report? If so, I'd advise you to fill it, because we can access to many informations trough the crash report.

With that being said, you could also send me your log (help > export log...), so I may personally take a deeper look.

Best regards,