I am trying to a run a slave blend to connect to a server. I made the slave and it runs on windows and will run fine on when I run in blender and start the service manually with a GUI. How when I try to run with a slightly modified command I run into errors.

open /Applications/Blender/blender "/Users/schultz/Desktop/Blender/slave.blend" --addons netrender -a -noaudio -nojoystick

When I try to run terminal I get this error:

open: unrecognized option '--addons'

I also tried to do an applescipt version

do shell script "open -a /Applications/Blender/blender "/Users/schultz/Desktop/Blender/slave.blend" --addons netrender -a -noaudio -nojoystick"

And that yielded

The operation couldn't be completed. ( com.apple.Automator error -212)

If anyone could inform me how to either send arguments to open or how to fix what I have to do that would be greatly appreciated.

I also tried to run it with exec and supply the arguments after

exec "/Applications/Blender/blender.app/Contents/MacOS/blender" [-b "/Users/schultz/Desktop/Blender/slave.blen" netrender -a -noaudio -nojoystick]

and that got me this error:

unknown option 'n': skipping  
unknown option 'n': skipping
wm_main_playanim_intern: '/Users/schultz/' not an image file

[Process completed]

1 Answer 1


The issue isn't with Blender. It's with the command you're running. Using the open command is fine for opening applications, but it doesn't allow you to pass arguments to the application (as far as I know).

You want to call the executable directly with: /Applications/Blender/blender.app/Contents/MacOS/blender "/Users/schultz/Desktop/Blender/slave.blend" --addons netrender -a -noaudio -nojoystick

Calling the executable itself will allow you to pass arguments to Blender.

  • $\begingroup$ Yea I figured it shortly after once I realized it was OSX not Blender and it getting arguments. Thank you none the less! $\endgroup$
    – ddaniels
    Feb 10, 2014 at 20:17

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