Just in case you were wondering, Sibelius Scorch is an industry standard. It's used by John Rutter, Pat Metheny, Leonard Slatkin, Steve Reich, Michael Kamen, Lalo Schifrin, Michael Tilson Thomas, and many more. Even Ray Charles used Sibelius before he died. I met Robert Sheldon (famous band composer) at a conference and he befriended me simply because I was a knowledgable Sibelius user. Anyway, if it's good enough for these guys, it's good enough for me.
And, of course, if you can't get it to work on your computer, check my Scorch Help page and see if I can suggest something that helps.