Can't paste (Command+V) into an NSTextField

Question

For some reason, an NSTextField isn't allowing me to paste anything into it using Command+V, though I can paste into it if I right-click and click 'Paste'. Why is this happening and how do I fix it?

Answer 1

I fixed it by linking the "Paste" button in my NSMenu Main Menu to the First Responder's paste: command.

Answer 2

What happens when you select "Edit > Paste" from your application's main menu?