II'm using version 6.1 (since I didn't want to stop and learn a new version). I haven't used Virtual Singer for a year or so, but previously I didn't have this problem.
Well, the current version of HA is 9.8 and I believe that most of us are using this one, so it will be difficult to trace the issue... Could you attach the file to your next post, so that we can test it ? Anyway, I advise you to upgrade to the latest version. There are quite a few changes (for the better) but I don't think you'll have much difficulty in mastering it, especially if you rely on the forum for additional help.