[ns] to resolve to run Satpep.tcl in ns-2

[wosesat]

 Hello all!
  
  I'm student in Ethiopia. I have a thesis work about making simulation network 
of TCP enhancing mechanisms 
  over satellite using NS2. I use ns-allinone-2.27
I run the satpep.tcl as follows:
ns satpep.tcl 1 10 0 1
When I run the satpep.tcl script I got the following message:
Creating 01-conn/010-mbps/00-loss/01-mbyte/satpep...
invalid command name "Connector/PPguage"
      while executing
" Connector/PPguage create _o82 "
      invoked from within
"catch  "$className create $o $args" msg "
      invoked from within
"if [catch "$className create $o $args" msg ] {
if [string match  " __FAILED_SHADOW_OBJECT_" $msg] {
delete $o
return " "
}
global errorInfo
error "class $..."
      (procedure "new" line 3)
       invoked from within
"new Connector/PPguage"
      invoked from within
"set guage_dnl [new Connector/PPguage]"
    (file "satpepe.tcl" line 112)

Is there anyone who test it and run it successfully? If so pls help me.
    
  Thanks
  Wossenu A.