OK….we have success here. The idea of getting buckets, etc., wasn't appealing for a first attempt. So I tried the hairdryer and heater method, and became discouraged when nothing was happening. What seem to do the trick, not sure if in combination, was to slightly jiggle the aforementioned hose exposed in the bottom right corner of the freezer door. With the water dispenser front door lever held down by a big ol' plastic cup with a stone in it, I opened and closed the freezer door ever so slightly which began to pump squirts of water out….I'm assuming like a primer or loosening whatever was in the line. Water began to flow just fine.