Passenger Side Door Won't Open from Inside

[turbo23dog]

2000 Boxster S with 51K miles.

The passenger side door won't open from the inside. Pulling the inside door handle will cause the pass window to drop ~1/2" but the door does not open. The outside door handle works fine.

I searched and didn't find any conclusive answer other than to try to get the central locking computer to relearn the window height by rolling the window up and down in two cycles, then hold the window button down for 30 secs. This procedure was tried and didn't fix the problem.

What else should I be looking at?

Thanks,