Hang in there! I know of several people who have been able to solve the 12th puzzle in v1.0 using only that debis to train a new Master Builder!

I highly recommend that you play the game at least one more time after downloading and installing the new v1.1! There have been many improvements to the game, and it's free to all registered users of Village Sim (your v1.0 registrations code will work with v1.1). Here's the link, in case you need it: http://www.ldw.com/zips/vs1_1.zip Just make sure that you're really ready to start a new game before you install v1.1, since it will delete any v1.0 savegame that it finds on your device.