IDVD closes itself at the theme screen

Question

I just bought a MacBook earlier this week, and everything seems to work fine. Exept for iDVD that is:
When i start iDVD (7.0.2) for the first time, it starts normal until i try to insert a movie, then iDVD closes itself. When i then try to start iDVD again, it starts normal until the theme screen comes up. I hear the beginning of the menu tune, see the beginning of a theme menu, but then iDVD closes itself. This happens every time now.
I tried some things i've read like deleting all the iDVD files and start again, or delete the whole thing and instal it again. This works; after a new instal i can start iDVD again until i want to insert a movie (after this same story). So it doesn't work really.
Does anyone know a solution for my problem? Or maybe something else i can try....? I would really like to use this program.

Answer 1

The very last line seems to indicate that you may have better luck on a separate user account. Have you already tried this approach? If not, try it.
Adding a new user account
You can create individual user accounts for each person who uses your computer. Each new user has a separate home folder and can adjust his or her own preferences without affecting other users.
Choose Apple menu > System Preferences and click Accounts.
If some settings are dimmed, click the lock icon and type an administrator name and password.
Click Add and type the user's name.
If you don't want to use the short name generated automatically, type a new short name. (Once the account is created, you won't be able to change the short name.)
Type the user's password in the Password and Verify boxes.
Type a hint to help the user remember the password if they have trouble remembering it at login.
Click Parental Controls and select options to determine what the user can do with the computer.
If you change your mind while you're creating a new user account, click Delete to cancel.
Hope this helps but if not just come on back.