There can be a couple of reasons. 1.RMIRegistry is already running. This is the usual suspect. By default, RMIRegistry runs on 1099. So, no one will use this port for any other purpose. If this is the case, then comment out the rmiregistry line in ...
File name of a VisualSim model that has Verilog module as a part of the system should not start with a number/special characters. In addition to this the file name should not contain “_”.