Hi there , this is what i get when i added this line to my tcl code: #Call xgraph to display results exec xgraph manet.tr -geometry 800X400 & i get this error: /usr/local/ns2/ns-allinone-2.29/bin/xgraph: /usr/local/ns2/ns-allinone-2.29/bin/xgraph: cannot execute binary file cheers
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