NSTextView copy & paste problem

In my application I have an NSTextView. If I want to select some text using the keyboard, I press Command+c, which is supposed to select the text, then Command+v which should paste the selected text. Using the keyboard, it's not working, but using the mouse copy/paste is working.

Moreover, when I type Command+c it invokes the print page -- looks like it's mapped wrongly, but how to co开发者_如何学JAVArrect it ?

Any pointers as to what I need to set to get it handled by the keyboard?

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Look at the various menu items in MainMenu.xib and make sure that all of the equivalent keys are set correctly. Maybe they were changed by accident.