> It sounds to me like you damaged the door lock actuator boot
> while putting it back together.
If the original poster is still around, they can say for sure, but it doesn't sound like a power lock problem to me. It sounds more like that case where you're sitting in your car and you reach over to unlock (manually) the passenger'* door for somebody to get in, but at the same moment they push the outside door button too soon, and you can't get the inside lock to unlock: plunger won't pull up, or the slide won't slide, or whatever.
So anyhow, if it'* really cold outside or the latch is really dry, pressing the outside doorhandle button and letting go doesn't actually retract the button rod inside the door. It'* like you're still standing outside with your thumb on the button, and the latch can't unlock.
Usually a good blast of WD-40 into the latch or down on it through the window glass opening will free it up. Worst case I ever had was on an '84 Regal with a driver'* door that wouldn't unlock or open. I had to pull the upper interior panel off the door _while_ the door was closed, goop up the latch by dripping oil onto it with my fingers, then work free a little spring-loaded plunger thing on the underside of the latch before it would start working again. Wotta pain that was.