Are you just getting errors regarding NSColor?  If not, can you post the error 
messages you're receiving?

I just see some NSColor stuff, and that's because -[NSColor CGColor] was added 
in 10.8, so it wouldn't be available in 10.7.  ARC complains about this because 
it doesn't know how ownership works for the returned thing since the method 
doesn't exist as far as it's concerned.

https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSColor_Class/Reference/Reference.html

--
Christopher Wright
[email protected]


On Jul 20, 2013, at 10:58 AM, Jonathan Hammond <[email protected]> wrote:

> Hi guys i've got a QC plugin that works out the primary colours of an image 
> like iTunes. I'm truing to build it for 10.7, each time i change the build 
> targets I get ARC Semantic Issues, i'm not a Obj C guys and am very confused 
> about how to fix this. Could anyone help 
> 
> The Source is located here 
> https://dl.dropboxusercontent.com/u/31564678/QCColourArt%202.zip
> 
> Much thanks
> 
> J
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