Here's the tutorial and I think you are right. Typing it by hand does work. ^^  
Thanks.

https://github.com/davidpersson/media/blob/next/docs/TUTORIAL


Jeremy Burns
Class Outfit

Tel: +44 (0) 208 123 3822
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Jeremy Burns
Class Outfit

http://www.classoutfit.com

On 2 Nov 2011, at 01:38, Ryan Schmidt wrote:

> 
> On Nov 1, 2011, at 04:26, Jeremy Burns wrote:
> 
>> I'm following the tutorial for setting up David Persson's media
>> plugin. Each time I run this:
>> 
>> chmod -R a+rwX webroot/media/{transfer,filter}
>> 
>> ... in Terminal I get this error:
>> 
>> chmod: Invalid file mode: -R
> 
> 
> I have a feeling you didn't type the command yourself, but that you copied 
> and pasted from the tutorial's web page. You didn't provide the URL of the 
> tutorial, but I'll bet it was posted on some blog, and that the blog engine 
> helpfully converted the hyphen in "-R" into an en-dash ("–R") or em-dash 
> ("—R"). They look very similar on-screen, especially in a fixed-width font, 
> but they're totally different to the Terminal. I'm able to reproduce the 
> error you experienced if I use an en-dash or em-dash in place of the proper 
> hyphen. So the lesson is: sometimes it pays to type commands yourself instead 
> of copy/pasting, just be sure to transcribe them very carefully.
> 
> 
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