New Dreamcast, new problems...

I bought a DC this year, but some backups don't work oon my machine, but they do work in other machines. Some people here say it's because the way the CD is burnt, others say it's because it's, new protection and stuff like that. Will the "mod chip" solve my problems? Maybe if I wait, people will launch a new Utopia Boot disc?
Can anyone help?
TX's