I might be too late now, but there was one little detail that I left off of my advice. Since your game wasn't paused when you last HotSynced, when you loaded it again a bunch of time had passed (from the game's point of view). Take a look at the date/time stamp on that savegame file on your PC and set your Palm clock to match. Then, load the game, launch it, pause the game, then put your Palm clock back to the correct date/time. All will be well.

If I'm too late, the knowledge will always help you if there's ever a next time!