I just installed Sibelius 3 (the latest version) last night and for some reason, it I can't make it run in OS X. When I open the program, the icon comes up on the dock, bounces about 3 times, then disappears. I have launched it in Classic, and it works; in fact, I've registered it by launching it in Classic. It runs, but not very wellfiles produce the spinning beach ball icon when opening. I've waited for them to open and I end up force-quitting every time. The software documentation even explains how to install it on OS X. I've followed the instructions to a "T." My system: Mac OS X 10.3.9 iMac G5 1.8 Ghz 1GB ram Has anyone else encountered this type of problem with Sibelius? I've even tried to run the additional software that comes with it (Kontact Silver, PhotoScore Lite, and the Sibelius 3.1 updater) to no avail. With the 3.1 updater, I get an error message saying "The default location required for this install could not be found. This install will be cancelled." I don't understand what's going on here with Sibelius. I've emailed their tech support and they haven't replied. I've also read the support forums as well as other Sibelius forums and haven't found an answer as to why it won't run in Panther. If no one else has had this kind of experience or knows anything about this, I am calling tech support in the morning. Thanks!