trace file format older then 1.0a5 namgraph cannot work

when i execute my tcl file it shows the following error
"You are using the tracefile format older than 1.0a5 which will not allow you to run namgraph"
how to solve this issue?
please anybody help me
i am using nam version 1.15
ns2 is 2.35
ubuntu 14.04 LTS
i have attached my tcl file also

Welcome to LQ.

»» when I execute the my tcl file «« : Unknown file.

Please upload your file.tcl to e.g. 'Google Docs'.
→ Your error(s) origins from your file.
* At LQ, a file.tcl can also be attached, as file.tcl.txt .
* Attachments : The paper clip tool in the 'Advanced Editor'.


P.S. : You will also find ancient examples in ns-2.35/tcl/ex/


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very thank you for your reply sir.
i have attached the tcl file.
normally this error not happen sir, but when i use
$ns initial_node_pos $node($i) 50
$node($i) random-motion 1
$node($i) start

these lines then only shows this error
"You are using the tracefile format older than 1.0a5
which will not allow you to run namgraph"
thanks and regards
giri