diff --git a/app/lib/aether_utils.coffee b/app/lib/aether_utils.coffee
index d6209f22d..a6efcd0fd 100644
--- a/app/lib/aether_utils.coffee
+++ b/app/lib/aether_utils.coffee
@@ -8,12 +8,12 @@ module.exports.createAetherOptions = (options) ->
   throw new Error 'Specify a code language to create an Aether instance' unless options.codeLanguage
 
   useInterpreter = options.useInterpreter
-  defaultToEsper = switch options.codeLanguage
-    when 'python' then me.level() < 15  # Esper currently works well until using range()
-    when 'javascript' then me.level() < 22  # Esper currently works well until using hero.myFn = function() pattern
-    when 'lua' then me.level() < 10  # Functions don't work in Esper yet, can't play forest function levels
-    when 'coffeescript' then false  # CoffeeScript has a toNative error if it ever finishes plan(), and also @fn = -> pattern doesn't work
-    when 'clojure' then false  # No Clojure support
+  defaultToEsper = false #switch options.codeLanguage
+#    when 'python' then me.level() < 15  # Esper currently works well until using range()
+#    when 'javascript' then me.level() < 22  # Esper currently works well until using hero.myFn = function() pattern
+#    when 'lua' then me.level() < 10  # Functions don't work in Esper yet, can't play forest function levels
+#    when 'coffeescript' then false  # CoffeeScript has a toNative error if it ever finishes plan(), and also @fn = -> pattern doesn't work
+#    when 'clojure' then false  # No Clojure support
   useInterpreter ?= !!utils.getQueryVariable 'esper', defaultToEsper
   aetherOptions =
     functionName: options.functionName
diff --git a/app/schemas/models/level_session.coffee b/app/schemas/models/level_session.coffee
index c8b63902a..339d1f491 100644
--- a/app/schemas/models/level_session.coffee
+++ b/app/schemas/models/level_session.coffee
@@ -55,9 +55,9 @@ _.extend LevelSessionSchema.properties,
     title: 'Changed'
     readOnly: true
   
-  dateFirstCompleted: c.stringDate
-    title: 'Completed'
-    readOnly: true
+  dateFirstCompleted: {} # c.stringDate
+#    title: 'Completed'
+#    readOnly: true
 
   team: c.shortString()
   level: LevelSessionLevelSchema