When i start my simulation, with command ./buld/pc/main.exe -b=1 -t=10 -r=lossy 3 > sim.txt it's showed: .. Initializing lossy model from lossy.nss 0: cannot open lossy.nss - assuming single radio cell .. What should i do to use this file for the "-r=lossy" option? Please, if anyone could help me! cheers Daniele