Thanks, now it works, but not because mi path had spaces... is working because no reason... xD. Lately im experimenting some strange things with the PATH and the comand line... for example sometimes i call some program in CMD and i get the response from another program... i tried to "clean" the path from unnecesary things but the problem persists and is really unpredictable, so maybe this was the reason the NASMENV was not working fine the first time.