I have several files in sibelius where playback either pauses on notes (in particular an upbeat into a second section) or plays with a lurching sort of effect with the strong/weak accents of normal music made a nonsense of. This last problem often resolves with a restart of the computer, so it isn't an issue of errors in the actual inputting.Anything obvious that I might have done wrong, or any suggestions for correcting this?
You really need to show us the sib file. Performance instructions can cause strange effects - e.g. the word 'Waltz' can cause notes to disappear. On the main Sibelius forum we've just done troubleshooting on a score where the word 'cool' in a block of text had an unwanted playback effect. Or this could be the characteristic lumpy playback of an inadequate audio system. Come on over to www.sibelius.com/cgi-bin/helpcenter/chat/chat.pl?groupid=3 , describe your hardware and attach a sib file, then those who know can help you.