I am no expert, but...
I got that very same error message (301989883) every time I tried burning a DVD on my very recent upgrade of Toast (I upgraded from Toast 6- yes, 6!- to Toast 18 Titanium). After many "coasters" and an enormous amount of wasted time (Thank you, Corel!), I ran into a totally different situation that I now think was TOTALLY related. I was trying to copy a new music CD (commercially made, so no problem there) into my old Mac laptop's iTunes library. The Mac's built-in CD/DVD drive got halfway through the disk and then started struggling. It kept having to start over and over on track 7 (you could clearly hear the drive restarting- perhaps the belts were slipping?), finally got it copied, started over and over on track 8, finally got it copied, etc. until I gave up and just ejected the newly-purchased CD. (Just to check, I put the CD into a different machine and had no problems with it at all.) I listened to the few tracks that HAD copied onto my hard drive/iTunes library, and they were terrible- unacceptable pops, gaps, jerks, etc- so I deleted them.
At that point, it seemed clear to me that the old CD/DVD drive (it was the original equipment) was failing. I went to Micro Center, bought an ASUS Blue Ray external 16X Blu-Ray Writer "Turbo Drive" and haven't seen that "301989883" since.
That Roxio/Corel can't be bothered to publicly post what their codes mean is infuriating. Considering the number of people on these forums who are having problems with their software, it smacks of dishonesty. (There is no virus! It'll all go away! There is no global warming! Black is white, and day is night!) Since I still haven't been successful at burning a single DVD yet (.mov files, whether generated from a computer or from an iPhone, now are coming out burned- even as disk images- with excellent video but no audio), I'm about three days away from contacting Roxio/Corel and asking for my money back.
Sorry, I'm in a bad mood. I hope the story about the failing CD/DVD drive helps you.