QTR-Quadtone RIP

I get a message:

"The process Quadtoneprint unexpectedly terminated on signal 5"

On my Mac Ibook.

Any suggestions as to what the problem might be?

Regards

Steve Harris

I looked in the files in the Yahoo group and did not see a curve. So, 
I am wondering if anyone has a curve to share for Innova FibaPrint 
White Gloss (F-type)? 

If not, any suggestions on an alternate curve?

Thanks,

Robert