In order for me to make my commands file look like yours, I to tab twice, otherwise it will look how I previously posted. This is what I have now and it is still not working. This is the same error I am encountering... ERROR - line 3 of 'commands' is not recognized commands-file # shortsleep 10usecs sleep 1000000usecs 50usecs exit # longsleep 10usecs sleep 5000000usecs 50usecs exit # cal 80usecs write terminal 2000B 90usecs exit # copyfile 200usecs read hd 48000B 300usecs write hd 48000B 600usecs read hd 21000B 700usecs write hd 21000B 1000usecs exit # shell 100usecs write terminal 10B 120usecs read terminal 4B 220usecs spawn cal 230usecs wait 1000usecs exit # sysconfig-file # devicename readspeed writespeed # device usb3.1 640000000Bps 640000000Bps device terminal 10Bps 3000000Bps device hd 160000000Bps 80000000Bps device ssd 480000000Bps 420000000Bps # timequantum 100usec