Try to change 

"$ns runs" 

to

"$ns run"

Best Wishes,

Teerawat Issariyakul
http://www.ns2ultimate.com/
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On Sep 29, 2011, at 4:19 AM, manishsingh chaudhary wrote:

> 
> 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
> 

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