After I installed the LEACH protocol and do '"make". it pops out the following information: Entering directory '/...../ns-2.29/indep-utils/cmu-scen/gen/setdest' make[1]: Nothing to be done for 'all' make[1]:Leaving directory '/...../ns-2.29/indep-utils/cmu-scen/gen/setdest' and so does other directories in indep-utils folder and the "make" process stops. Can anybody tell me what's the problem? thx a lot -- USTC Alumni Email System