Hi friends, 
i'm trying to simutate GPSR protocol.For the organization of the directories, i 
put these informations in the correspondant .sh file

proto=GPSR
simdir=gpsrsimulation
statdir=stat
scendir=$simdir/scen
trafdir=$simdir/trafic


when i execute the simulation file .sh it shows me this error 

num_nodes is set 50
couldn't open "gpsrsimulation/GPSR.tr": no such file or directory
    while executing
"open $opt(tr) w"
    invoked from within
"set tracefd    [open $opt(tr) w]"
    (file "simulation.tcl" line 166)
tail: cannot open `statfile' for reading: No such file or directory


How can i deal with this error? 
Thank you 
ZAK
                                          

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