Your project uses basic internationalization, which makes it easy to translate your application into other spoken languages. Basic internationalization is supported on Mac OS X 10.8 and later, so you get a warning when you change the deployment target to 10.6.
There are two ways to get rid of a warning. First, you can set a deployment target for 10.8. Secondly, you can turn off basic internationalization. Select a project from the project navigator to open the project editor. Select the project on the left side of the project editor. Uncheck the Use basic internationalization box.

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