Well I figured it out myself. It seems there is a bug in Catia when you have any of the tool holder lengths set at 0 it will not display the tool assembly on your cutter path but it will show it in the simulation with the rough stock. I have attached a picture for clarification. I hope this helps anyone who may have or have the same problem.I changed the parameters of a tool assembly and now it doesn't display when I replay my cutter pass. I tried restarting Catia but still no tool or cutter. It shows the path of the cutter but no solid. I have changed parameters in the assembly before without any problems.