Runtime Error(NZEC)

I get the following error
Runtime Error(NZEC)

when running python code with psyco JIT compiling

code:
import psyco
psyco.full()

refer to FAQ for info on NZEC. psyco helps optimize code but a lot depends on the structure of your code. I have generally seen it gives NZEC because of some error. it is possible to solve questions without using psyco though.

//