[ns] help on segmentation fault after adding a new agent

[Srirupa Dasgupta]

  Dear Ns-friends, I have added a new Agent with a new packet type
..however I have made all the changes in ns-packet.tcl, ne-default.tcl
packet.h and in the Makefile...my make command is running without errors 
..however when I define the agent in the tcl file and run the tcl script 
it is giving segmentation fault
please please
help
Regards Srirupa