Dark Avatar and later

I had no problem playing Altarian Prophecy, but with Dark Avatar I've been unable to choose my Civ, alter adversary numbers or settings, etc.  The windows are frozen. The game still plays, but these interfaces are dead.    Did I install incorrectly?  Is there a patch?   This takes a lot of the fun out of the game.    I've already pre ordered Twilight of the Arnor but would like to get this one working first...