static int max_loop = 8; I'd guess that's the problem. You could always edit it to add more, recompile, and see if it works. ;^) Just to be sure...did you start with loop0? Then 0-7 makes sense... Regards, matt -- Matt Matthews \ ph: 919.660.2811 \ Use GNU/Linux _o) w00t Duke Univ., Postdoc\ jvmatthe at math.duke.edu \____________ /\\ Dept. of Mathematics\ http://www.math.duke.edu/~jvmatthe/ \ _\_V