Having Sibelius Scorch playback issues

[I'm a Mac]

I have two Macs; a late 2007 iMac and a late 2008 MacBook. On the iMac, playback works perfectly, on the macbook, I can't hear any scorch files- I don't get it. The settings and OS's are exactly the same 10.5.6 @44100 hz. Is anyone else having similar issues. And yes, I've tried restarting, re-installing, and running using rosetta.

[Telbonaluap]

My Mac and those of 3 friends behave the same as you have described. We can see the Scorch, but not hear it. Sometimes if we reinstall the plug-in and restart it does work for awhile, but in the end we are back to no sound. Since we use these files to help rehearse for a choral group, we would really like to find a solution.

I will keep searching, and if anyone else has an answer, please post.

Thanks!

[Telbonaluap]

Just found the solution at the Sibelius site. It actually WORKED for me!

To get Scorch playback working reliably, trash the 'Scorch' folder in
/Users/[your username]/Library/Application Support/Sibelius Software/,
then make sure that the first score you visit uses General MIDI sounds,
e.g. this page:

http://www.sibeliusmusic.com/cgi-bin/showhtml.pl?storeid=-1&file=test_print

You should then find that Scorch always plays back correctly from then on.