Hi Sean, Quick question: should a parallel sequence work when running my simulation using the GUI? I use the GUI just to de-bug and make sure I coded something correctly. With the parallel sequence, the simulation seems to go from start right to the end without stepping anything. It runs fine on the command line. I assume this is a coding error on my side, but just wanted to make sure. Otherwise, I nearly have the whole sim parallelized including events that don't happen each time step such as initialziation of objects and recuitment events. Thanks, Steve -- Steven Saul, M.A. Graduate Assistant, Marine Biology and Fisheries Cooperative Institute for Marine and Atmospheric Studies Cooperative Unit for Fisheries Education and Research University of Miami - RSMAS 4600 Rickenbacker Cswy. Miami, Florida 33149 + 1 305-421-4831 http://cufer.rsmas.miami.edu