[ns] setdest error

Hii m trying to use setdest tool to generate randomway point model fro my simulation but when i run ./setdest command i m getting this error. can anyone tell me why i mgetting this error in setdest.cc file and how to resolve it.regards,najma

najmaismat@ubuntu:~/ns-allinone-2.29/ns-2.29/indep-utils/cmu-scen-gen/setdest$ ./setdest -v 1 -n 5 p 2.0 -s52.0 -t 60 -x 100 -y 100## nodes: 5, pause: 0.00, max speed: 0.00, max x: 100.00, max y: 100.00#$node_(0) set X_ 68.572913404360$node_(0) set Y_ 13.038846829925$node_(0) set Z_ 0.000000000000$node_(1) set X_ 84.128541918177$node_(1) set Y_ 82.494416148131$node_(1) set Z_ 0.000000000000$node_(2) set X_ 14.562919044189$node_(2) set Y_ 38.205968110552$node_(2) set Z_ 0.000000000000$node_(3) set X_ 41.413668709351$node_(3) set Y_ 34.787218560404$node_(3) set Z_ 0.000000000000$node_(4) set X_ 59.636714007807$node_(4) set Y_ 37.280814036357$node_(4) set Z_ 0.000000000000setdest: setdest.cc:595: void Node::RandomSpeed(): Assertion `speed != 0.0' failed.Aborted