help with the installation of LEACH protocol

Hi all,

I have been working on LEACH protocol for WSN. I jsut installed it onto my system(Ubuntu 9.10). with NS2 version 2.27. But I get some errors like this

1. $student@student:~/ns-allinone-2.27/ns-2.27$ ./test

I get that this

Loading connection pattern…
Loading scenario file…
Starting Simulation…
channel.cc:sendUp – Calc highestAntennaZ_ and distCST_
highestAntennaZ_ = 1.5, distCST_ = 89.8
SORTING LISTS …DONE!
NS EXITING…
./test: line 5: ./leach_test: No such file or directory

it is giving ./leach_test: No such file or directory even though I have leach_test file.

and If I give this
$student@student:~/ns-allinone-2.27/ns-2.27$./leach_test

no simulation starts..

Please reply with a solution to this,
Thanks