On Dec 15, 2011, at 10:28 PM, Mark Munz wrote:

> I've not seen Mac OS X fail to run an app I've double-clicked on, but
> it is notorious for grabbing seemly random old versions of plugins
> like Automator actions, quicklook plugins, Services from older apps
> that are still around -- sometimes giving precedence to apps on
> non-boot volumes (over one on the boot volume).
> 
> It is especially an annoying mess for developers, who are more likely
> to have multiple versions lurking about.

Don’t forget document-application bindings. Double-click a file that belongs to 
application “Foo” when you have both Foo 1.0 and Foo 2.0 installed on your 
machine, and who knows which one you’ll get — but boy, does it ever love to 
pick things out of ~/Library/Mail and ~/Library/Mail Downloads.

If Apple updated LaunchServices to have it look at the CFBundleVersion when 
multiple applications have the same bundle identifier and always pick the 
latest one, I’d be a happy man.

Charles

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