NCO compile freeze

Hi

I'm using quartus II 13.0 WEB with a DE1 board at my University.

Im trying to generate a sine with cordic algoritm using Megafunction NCO.

During NCO creation the operation "freeze" at "generating megacore function top-level..."

I tryed different configuration and use multipliers instead cordic, but i had the same problem.

There is something i have to do to unfreeze?

Max