I had this problem last week but it seems to have been solved by reinstalling 
the ccp4 6.4.0 package today, slightly updated I believe

There was message from Eugene Krissinel which may be relevant to this

Phil

On 28 Oct 2013, at 16:00, Dmitry Rodionov <[email protected]> wrote:

> Good day!
> 
> I'm having problems with qtrview (on OS X 10.6): it crashes or hangs after 
> spitting out a screenful of messages like
> 
> objc[2975]: Class QCocoaMenu is implemented in both 
> /Applications/ccp4-6.4.0/bin/../Frameworks/QtGui.framework/Versions/4/QtGui 
> and /Library/Frameworks/QtGui.framework/Versions/4/QtGui. One of the two will 
> be used. Which one is undefined.
> 
> Just like the message says, I have Qt 4 installed in the standard location. 
> It seems like the global Qt it is being used instead of the one supplied with 
> CCP4 6.4 since moving /Library/Frameworks/Qt* elsewhere fixes the problem.
> Oddly enough, qtrview of CCP4 6.3 worked fine under the same conditions.
> 
> Is there a way to make qtrview use CCP4's Qt and ignore other versions?
> 
> Thanks!
> 
> Best regards,
>       Dmitry
> 

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