Keyboard won't talk to Finder (but does to others)

The keyboard types just fine into word and iTunes but not in the Finder when I want to change the name of a file, for instance. It's a Mac keyboard and it's into my G5. I tried switching ports but no difference.

Why okay in one program but not Finder? How to fix?

Thanks for any help.

via ehMac.ca http://ift.tt/1PrqqWa