In my kitchen, I installed a GFCI but it will not work if I put one receptacle on its Load. I press reset and see the lights come on, but it immediately trips. If I put the wires in Line only, or remove the receptacle wiring, the GFCI works (so does the other receptacle if it's in Line). I have tried two new GFCIs and they do the same thing. The multimeter shows 120V, and the receptacle tester shows green for both outlets
Here's the set up: Breaker -- GFCI -- Receptacle
What's the deal?