Reply to PLEASE HELP: VCI-100 & Traktor Crashes

I need some help here, every time I have used traktor and the VCI-100 (arcade), traktor will just crash from time to time - I'm not even touching anything at the time of crash, it's just music playing.

After an upgrade to the Leopard OS, the crash seemed to have been fixed. However, I have tested this out in the club a few times and sometimes the VCI is not responsive and I have just stopped using it and have gone back to using my Nano pad. THEN on NYE, I decided to give it another try -- everything was fine for a couple of hours and then while using the VCI-100, the beach ball shows up and traktor freezes, and once during COUNTDOWN. Bad evening ... had to use Serato and the Nano pad.

What is going on here? I'd like to get the issue fixed so I don't feel like I have wasted money on this super souped up toy.

Macbook
OSX 10.5.8
2 Ghz Intel Core 2 Duo
2 GB 667 Mhz DDR2 SDRAM
L2 Cache 2MB
using most updated version of Traktor Pro