I just bought a G5 with osx Tiger. unfortunately it was used (from a personal buy) and it did not have idvd, the previous owner said he may have deleted it because he never used it, instead he used a different dvd recording software (but the name escapes me)

So I had a copy of it in my office and I installed it. However it is iDvd 04 not iDVD 05

I didn't think it would be a problem. I have a dvd burner in the computer but when I go to burn my movie, it keeps rejecting the brand new DVD-R that I put in the machine and keeps saying please insert blank dvd-R

But they are brand new right out of the pkg. Can anyone tell me what I'm doing wrong?