A World Of Keflings game-breaking glitch on level 3? Need magic potions for the Keep but there's no converter?

I have the 1st & 2nd "worlds" 100% farmed except for the stuff on the islands (is there any way to get on these?) and & I'm on level 3. I have everything up to (and including) the Great Hall built on the Ice Kingdom & everything up to the Keep (but not the keep itself) built on the Forest Kingdom, and there's no buildings to convert Magic Gems to Magic Potions (no blueprints either). Also, nobody has the yellow exclamation point above their heads just fyi. Am I missing something or is this a game-breaking glitch? Maybe they're money hungry & you need the other 2 Ninja-Bee games for the Wizard's Tower (if it's still called that in this game)? Or does sharing somehow get you a gem converter? I got this yesterday & it sucks that I can't advance any further so answer asap. Thanks.