I'm having some problems working the official Earthdawn 4E sheet. Everything seems to be working fine until it's time to cast a spell. One of my players is attempting to cast Disaster (actually, I'm testing as the GM, but it doesn't seem that should matter). He clicks the token action for the spell and selects "New Casting" from the drop-box. Disaster doesn't require any threads, but the chatbox asks if he would like to weave additional threads, with no ability to offer input. Next, when I attempt to weave threads (or cast spell), I get an error stating " Error! Spell Casting may only be selected after starting a new Casting.". Any ideas what I'm doing wrong?