Idle Master Won't Run - OSX

[idlemasteruser1]

Can't remember if I'm meant to use "start" or "steam-idle"
for "start" I get this message
";
Error loading config file
Press Enter to continue...
logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[Process completed]"

and for "steam-idle" I get
"Wrong number of arguments
logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[Process completed]"

I've done the settings (steamlogin and sessionid), not sure where to go from here