Hi alice_srq
Welcome to apple discussions.
First, try using iDvd from a separate user account to see if the problem persists in the newly created account. You can add a new user account by going into system pref's > accounts. The +plus sign at the foot of the dialog box will help you add a new user after it's unlocked (if that's how you set up your mac). You will need to have access to your password / admin to do this. If the same problem persists and you have already tried disposing of the plist for iDvd
com.apple.iDvd.plist
(located in your preferences folder)
then perhaps (and this is just a guess) you have to resolve a duplicate fonts issue. You can do this within Mac Fonts Book like this:
click here
Secondly
read this link. It will help you manage, validate, and organize fonts.
Hope this helps but if not just come on back.
Message was edited by: SDMacuser