When you say CD, do you really mean DVD? I'm assuming so because iDvd simply will not burn video or audio to a CD. I use Verbatim Dvd-R mostly. Sometimes I'll also use Maxell. But from past experience (mostly on older Mac stock S-Drives) I've learned to steer clear of Memorex products as well as a number of bulk media products.
Once in a long while I'll also use Verbatim Dual Layer Dvd's if I have an exceptionally long presentation (which is nearly always plus + media).
If you followed only the prompt/s within iDvd, then you can only burn to a Dvd. Inserting a CD will simply make the app reject the media and spit it right back out at you. It'll keep doing this until you insert media it can write to.
Bottom line is that if you use Verbatim or Maxell instead of Memorex, I think you'll have much better success. But if not just come on back.
-------------
Disclaimer: Apple does not necessarily endorse any suggestions, solutions, or third-party software / products that may be mentioned in this topic. Apple encourages you to first seek a solution at Apple Support. The following links are provided as is, with no guarantee of the effectiveness or reliability of the information. Apple does not guarantee that these links will be maintained or functional at any given time. Use the information above at your own discretion.
Message was edited by: SDMacuser