[ns] error statement

[manishsingh chaudhary]

hi to all

there was error during compilation

   (_o3 cmd line 1)
    invoked from within
"_o3 cmd runs"
    invoked from within
"catch "$self cmd $args" ret"
    invoked from within
"if [catch "$self cmd $args" ret] {
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error "error when calling class $cls: $args" $..."
    (procedure "_o3" line 2)
    (SplitObject unknown line 2)
    invoked from within
"$ns runs "
    (file "wireless1.tcl" line 146)
please sort out the problem .it will be great help for me.
thanks

with regard
manish