kadward;
You didn't say what "everything" you had done, so I would start by flushing the system throughly at least 10 times, that is, let it make ice, dump it, make more ice, dump it and so on. Even if the water source tastes good as drinking water, it may taste and smell a bit unpleasant when frozen into ice cubes. A water filter can reduce the taste and odor problems. Ice cubes also pick up odors from the inside of the freezer and refrigerator--especially from open food containers. To minimize that problem, empty the ice cube bin from time to time, and start with a fresh set of ice cubes before each camping trip. Hope this helps.
John