Traktor Pro - Help Please

EDIT: PROBLEM SOLVED :D:D:D:D

Alright, so I'm in the process of installing the Traktor Pro Upgrade (I have 3 LE installed) and I put in the installation disk... which my computer (macbook pro from early 2008) proceeds to spit out, and does so again when I tried putting in the disk again.
I am currently running Mac OS X Version 10.6.4

What are my options? Can I just download the free demo of Pro and use the upgrade on that? Do I need to be looking at getting my DVD drive replaced?

Thanks in advance for any help.

I didn't use the disk, I just used the service centre and typed my serial number in.

you can download traktor from the NI website or service centre if you have the serial number i think...

Thanks for the suggestions.

I put in the serial number and activated it.
However there is a field called "Version" which has the alert of "No Binary Found". If I hit the locate button I end up having to look through my computer for the binary which I don't have ask I couldn't install it from the disk, I might not have the ability to download it through service center because I bought the physical version though.

Edit: Downloading the Demo Version now, will see if that works.

Edit #2: Installed the Demo and then used it's location as the binary, everything appears to be set up well and fine, says I have full license and all that jazz. Looks like I solved my own problem :)