G-speed es crashes Premiere Pro on Mac Pro

[riveredit]

Hi,
I recently purchased a 12TB Gspeed es for use in my mid2010 Mac Pro. I want to use it as media drives for Premiere Pro 5.0.
I set up a RAID5 array with the web interface, and partitioned the array with disk utility.
This appeared to enable me to use the drives (I could copy files etc) but when I tried to run Premiere, it became unusable and caused Premiere to crash, with force quit being the only option.

Anybody have any clues as to why this might be happenening?

Cheers,

R