What kind of computer is it?
I had problems with that exact setup on my 5500.
I then upgraded to 9, and that didn't help
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First of all, get Toast Deluxe 4. I use that with OS 9.04 and an Adaptec 2906 with a Yamaha 8424, and its an awesome setup - never any problems.
The latest version of Toast 3 is 3.57 I believe, so you may also want to try that.
What model is it? The Yamaha CRW4416E or the Yamaha CRW4416S?
The S needs a firmware update, 1.0f. I couldn't find that... try on Adaptecs site.
The E didn't get Toast compatibility to version 4... The E got it in 3.56, which was severely overhauled in 4.
It has been known that incompatible versions of Toast were shipped with burners... happened to me. Yamaha seem to do that a fair bit
.
Let us know how it goes...
Cipher13