Fixed cast button moving around due to anticipated errors early.

app/styles/play/level/tome/spell.sass

@@ -51,7 +51,7 @@
     line-height: 20px
     overflow: visible
 
-    &.user-code-problem
+    &.user-code-problem.spell-cast
       @include editor-height(40px)
 
     &.disabled

app/views/play/level/tome/spell_view.coffee

@@ -336,6 +336,7 @@ module.exports = class SpellView extends View
     #console.log '  and we could do the visualization', aether.visualization unless _.isEmpty aether.visualization
     # Could use the user-code-problem style... or we could leave that to other places.
     @ace[if @problems.length then 'setStyle' else 'unsetStyle'] 'user-code-problem'
+    @ace[if isCast then 'setStyle' else 'unsetStyle'] 'spell-cast'
     Backbone.Mediator.publish 'tome:problems-updated', spell: @spell, problems: @problems, isCast: isCast
     @ace.resize()