[ns] problem running snoop!!

["stecve jobs" <steve_678@rediffmail.com>]

hi friends

         i am using the ns8 version ..
         when i try to run snoop.tcl given in the
         source ....it gives the following error

         //---------------------------------------------
         invalid command name "BaseTrace"
         while executing
         "BaseTrace instproc attach fp {
         $self instvar fp_

         set fp_ $fp
         $self cmd attach $fp_
         }"
         (file "~/ns8/tcl/lib/ns-trace.tcl" line 65)
         invoked from within
         "source.orig ~/ns8/tcl/lib/ns-trace.tcl"
         ("uplevel" body line 1)
         invoked from within
         "uplevel source.orig $fileName"
         (procedure "source" line 12)
         invoked from within
         "source ~/ns8/tcl/lib/ns-trace.tcl"
         (file "snoop.tcl" line 71)

         //-------------------------------------------------

         Can anyone please tell me my mistake ?
         Thanx a lot !!
         ..steve

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