Mach 4 v 4612 , what ever screen set i try to load , Mach4 closes . I have a profile that works and has w4. screen set , if i try to change it to a different screen set , Mach 4 closes , at times i get a debug report screen but it does not send the report . I go to view - load screen set - pick a set from the screens folder in Mach - hit ok and mach 4 closes.