Problem: Sibelius Stopped Working.
I forget what OS you are using. In the meantime, shut the computer down completely and, as my wife says, let it think about its sins. Once the computer has properly come to terms with its behavior, start it up. A hard shutdown is different from a restart in that more temporary operations are terminated.
When that doesn't work, and if you are on Windows, you might look into the Event Viewer to see what is happening when you try to open Sibelius.
When that doesn't work, and if you are on Windows, you might look into the Event Viewer to see what is happening when you try to open Sibelius.
Bob Porter
Sibelius 7.5, W10,i5,16 GB ram,desktop
Sibelius 7.5, W10,i5,16 GB ram,desktop