How to run same pakcage twice at the same time?

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let me make it clear if i execute rosrun sicktoolbox_wrapper sicklms __name:=sicklms it is executable but doesnt change anything if i execute this rosrun sicktoolbox_wrapper sicklms __name:=sicklms2 i have [ERROR] [1397226096.240203952]: Initialize failed! are you using the correct device path? :/

i just found that if i do rosrun sicktoolbox_wrapper sicklms __name:=sicklms2 it says attempting to open devic @ /dev/lms200 which is a path that i never told the computer to do

This is probably the default value. You will need to set the parameter `rosparam set /sicklms2/port /dev/ttyUSB1` when you run `rosrun sicktoolbox_wrapper sicklms __name:=sicklms2`. It is probably best if you create a launch file for your nodes.