Going into the temple the next time you play allows you to go to the last auto-save position before the game failed to save. Check the date stamps. You should download BWBackup before going too far on this level until the game is officially patched. You could also try Defroster , which gives partial success, but the error manifests again. Rebooting you machine also seems to cure it for a while.
Puzzles are trickier than before.
You can tackle this puzzle once you have converted the Japanese village, which is North West of your temple. This is just the old Simon electronic memory game. 123523141 from left to right. This stops the Fireballs and gives you a Guardian stone. You have to win a fight against him.