Please help. Disc Juggler not working for me

I'm using DJ to burn MSR and JGR and can't get DJ to work. Like it'll go like 5% then spit out the disc.

I have an Iomega zip 650 external. Also, when I put these cds that are spit out back in my CD-ROM drive, they open up into 6 seconds of Windows Media...strange. Of course when I click play for this 6 second thing, it says "Error".

Help needed, thanks.