John, welcome to Bladeforums. I hope you have more fun with your other knives than with that one!
OK, where did you get it, from a dealer? Call him, tell him what's happening. He may take care of you. Which is a good reason for buying from dealers with good customer service reputations -- check out the other forums here, like the Good, Bad, and the Ugly, where the winners and losers get pointed out.
You could also contact the manufacturer, and let them know one of their knives got past quality control. Give them a chance to make it right.
We also have forums for some knife companies, so later on, you may have a knife from one of them, you can ask the company rep right here what to do.
But first, check with the dealer who sold it to you or with the manufacturer. You shouldn't have to hold onto a knife that doesn't do what it's supposed to. In this case, a bad liner lock, it is absolutely dangerous.
