I posted this below, but as it was a thread about DP7, and haven't had any responses, I thought I'd post afresh...
I have a quickscribe font problem. I've followed Shooshie's instructions for performing a safe boot but it didn't solve it. I suspect it's because I'm using DP5.13 with Snow Leopard (10.6.2).
Here's a screenshot of what I get displayed as a c major scale...

I suppose I should brace myself for an "upgrade to DP7" answer, but if you have any ideas for my current version I'd be very grateful.
Sorry, just realised I should have posted this in the troubleshooting section.