diff --git a/app/lib/LevelLoader.coffee b/app/lib/LevelLoader.coffee
index cc9a6dd12..4298460c0 100644
--- a/app/lib/LevelLoader.coffee
+++ b/app/lib/LevelLoader.coffee
@@ -31,7 +31,6 @@ module.exports = class LevelLoader extends CocoClass
     @opponentSessionID = options.opponentSessionID
     @team = options.team
     @headless = options.headless
-    @inLevelEditor = options.inLevelEditor
     @spectateMode = options.spectateMode ? false
 
     @worldNecessities = []
@@ -89,8 +88,6 @@ module.exports = class LevelLoader extends CocoClass
       for itemThangType in _.values(heroConfig.inventory)
         url = "/db/thang.type/#{itemThangType}/version?project=name,components,original"
         @worldNecessities.push @maybeLoadURL(url, ThangType, 'thang')
-    @populateHero() if @level?.loaded
-
   # Supermodel (Level) Loading
 
   loadLevel: ->
@@ -103,7 +100,6 @@ module.exports = class LevelLoader extends CocoClass
 
   onLevelLoaded: ->
     @populateLevel()
-    @populateHero() if @session?.loaded
 
   populateLevel: ->
     thangIDs = []
@@ -158,15 +154,6 @@ module.exports = class LevelLoader extends CocoClass
 
     @worldNecessities = @worldNecessities.concat worldNecessities
 
-  populateHero: ->
-    return
-    return if @inLevelEditor
-    return unless @level.get('type') is 'hero' and hero = _.find @level.get('thangs'), id: 'Hero Placeholder'
-    heroConfig = @session.get('heroConfig')
-    hero.thangType = heroConfig.thangType  # Will mutate the level, but we're okay showing the last-used Hero here
-    #hero.id = ... ?  # What do we want to do about this?
-    # Actually, swapping out inventory and placeholder Components is done in Level's denormalizeThang
-
   loadItemThangsEquippedByLevelThang: (levelThang) ->
     return unless levelThang.components
     for component in levelThang.components
@@ -225,8 +212,7 @@ module.exports = class LevelLoader extends CocoClass
 
     for thangTypeName in thangsToLoad
       thangType = nameModelMap[thangTypeName]
-      console.log 'found ThangType', thangType, 'for', thangTypeName, 'of nameModelMap', nameModelMap unless thangType
-      continue if thangType.isFullyLoaded()
+      continue if not thangType or thangType.isFullyLoaded()
       thangType.fetch()
       thangType = @supermodel.loadModel(thangType, 'thang').model
       res = @supermodel.addSomethingResource 'sprite_sheet', 5
diff --git a/app/lib/surface/CocoSprite.coffee b/app/lib/surface/CocoSprite.coffee
index a3dbc4130..d1066a37d 100644
--- a/app/lib/surface/CocoSprite.coffee
+++ b/app/lib/surface/CocoSprite.coffee
@@ -82,6 +82,7 @@ module.exports = CocoSprite = class CocoSprite extends CocoClass
     if @thangType.isFullyLoaded()
       @setupSprite()
     else
+      @thangType.setProjection null
       @thangType.fetch() unless @thangType.loading
       @listenToOnce(@thangType, 'sync', @setupSprite)
 
diff --git a/app/lib/surface/WizardSprite.coffee b/app/lib/surface/WizardSprite.coffee
index fc59f010d..e0cb356f1 100644
--- a/app/lib/surface/WizardSprite.coffee
+++ b/app/lib/surface/WizardSprite.coffee
@@ -83,7 +83,7 @@ module.exports = class WizardSprite extends IndieSprite
     @options.colorConfig = $.extend(true, {}, newColorConfig)
     if shouldUpdate
       @setupSprite()
-      @playAction(@currentAction)
+      @playAction(@currentAction) if @currentAction
 
   onSpriteSelected: (e) ->
     return unless @isSelf
diff --git a/app/models/CocoModel.coffee b/app/models/CocoModel.coffee
index de02d9f1d..759505283 100644
--- a/app/models/CocoModel.coffee
+++ b/app/models/CocoModel.coffee
@@ -22,8 +22,17 @@ class CocoModel extends Backbone.Model
     @on 'error', @onError, @
     @on 'add', @onLoaded, @
     @saveBackup = _.debounce(@saveBackup, 500)
-    
-  setProjection: (@project) ->
+
+  setProjection: (project) ->
+    return if project is @project
+    url = @getURL()
+    url += '&project=' unless /project=/.test url
+    url = url.replace '&', '?' unless /\?/.test url
+    url = url.replace /project=[^&]*/, "project=#{project?.join(',') or ''}"
+    url = url.replace /[&?]project=&/, '&' unless project?.length
+    url = url.replace /[&?]project=$/, '' unless project?.length
+    @setURL url
+    @project = project
 
   type: ->
     @constructor.className
@@ -61,7 +70,7 @@ class CocoModel extends Backbone.Model
       CocoModel.backedUp[@id] = @
 
   saveBackup: -> @saveBackupNow()
-    
+
   saveBackupNow: ->
     storage.save(@id, @attributes)
     CocoModel.backedUp[@id] = @
@@ -220,7 +229,7 @@ class CocoModel extends Backbone.Model
       return false
     for key, value of newAttributes
       delete newAttributes[key] if _.isEqual value, @attributes[key]
-      
+
     @set newAttributes
     return true
 
diff --git a/app/models/Level.coffee b/app/models/Level.coffee
index ad3458692..8dca3da50 100644
--- a/app/models/Level.coffee
+++ b/app/models/Level.coffee
@@ -47,7 +47,6 @@ module.exports = class Level extends CocoModel
         placeholders[thangComponent.original] = thangComponent
       levelThang.components = []
       heroThangType = session?.get('heroConfig')?.thangType
-      console.log "got thang type", heroThangType
       levelThang.thangType = heroThangType if heroThangType
 
     configs = {}
diff --git a/app/treema-ext.coffee b/app/treema-ext.coffee
index d1f76b9a9..56e91a303 100644
--- a/app/treema-ext.coffee
+++ b/app/treema-ext.coffee
@@ -37,7 +37,7 @@ class LiveEditingMarkup extends TreemaNode.nodeMap.ace
           .click(=> filepicker.pick @onFileChosen)
       )
     )
-    
+
   addPreviewToggle: (valEl) ->
     valEl.append($('<div class="toggle-preview-button"></div>').append(
       $('<button>Toggle Preview</button>')
@@ -223,7 +223,7 @@ codeLanguages =
 
 class CodeLanguagesObjectTreema extends TreemaNode.nodeMap.object
   childPropertiesAvailable: ->
-    (key for key in _.keys(codeLanguages) when not @data[key]?)
+    (key for key in _.keys(codeLanguages) when not @data[key]? and not (key is 'javascript' and @schema.skipJavaScript))
 
 class CodeLanguageTreema extends TreemaNode.nodeMap.string
   buildValueForEditing: (valEl) ->
@@ -316,7 +316,7 @@ class LatestVersionReferenceNode extends TreemaNode
     input = valEl.find('input')
     input.focus().keyup @search
     input.attr('placeholder', @formatDocument(@data)) if @data
-    
+
   buildSearchURL: (term) -> "#{@url}?term=#{term}&project=true"
 
   search: =>
@@ -351,7 +351,7 @@ class LatestVersionReferenceNode extends TreemaNode
 
   getSearchResultsEl: -> @getValEl().find('.treema-search-results')
   getSelectedResultEl: -> @getValEl().find('.treema-search-selected')
-  
+
   modelToString: (model) -> model.get('name')
 
   formatDocument: (docOrModel) ->
@@ -411,7 +411,7 @@ class LatestVersionReferenceNode extends TreemaNode
     return if @data?
     selected = @getSelectedResultEl()
     return not selected.length
-    
+
 class LevelComponentReferenceNode extends LatestVersionReferenceNode
   # HACK: this list of properties is needed by the thang components edit view and config views.
   # need a better way to specify this, or keep the search models from bleeding into those
diff --git a/app/views/editor/level/LevelEditView.coffee b/app/views/editor/level/LevelEditView.coffee
index 8461437e7..7dd827254 100644
--- a/app/views/editor/level/LevelEditView.coffee
+++ b/app/views/editor/level/LevelEditView.coffee
@@ -47,7 +47,7 @@ module.exports = class LevelEditView extends RootView
     super options
     @supermodel.shouldSaveBackups = (model) ->
       model.constructor.className in ['Level', 'LevelComponent', 'LevelSystem', 'ThangType']
-    @levelLoader = new LevelLoader supermodel: @supermodel, levelID: @levelID, headless: true, inLevelEditor: true
+    @levelLoader = new LevelLoader supermodel: @supermodel, levelID: @levelID, headless: true
     @level = @levelLoader.level
     @files = new DocumentFiles(@levelLoader.level)
     @supermodel.loadCollection(@files, 'file_names')
diff --git a/test/app/models/CocoModel.spec.coffee b/test/app/models/CocoModel.spec.coffee
index 059eeb2cf..9456707b3 100644
--- a/test/app/models/CocoModel.spec.coffee
+++ b/test/app/models/CocoModel.spec.coffee
@@ -22,7 +22,24 @@ describe 'CocoModel', ->
       b.fetch()
       request = jasmine.Ajax.requests.mostRecent()
       expect(decodeURIComponent(request.url).indexOf('project=number,object')).toBeGreaterThan(-1)
-  
+
+    it 'can update its projection', ->
+      baseURL = '/db/bland/test?filter-creator=Mojambo&project=number,object&ignore-evil=false'
+      unprojectedURL = baseURL.replace /&project=number,object/, ''
+      b = new BlandClass({})
+      b.setURL baseURL
+      expect(b.getURL()).toBe baseURL
+      b.setProjection ['number', 'object']
+      expect(b.getURL()).toBe baseURL
+      b.setProjection ['number']
+      expect(b.getURL()).toBe baseURL.replace /,object/, ''
+      b.setProjection []
+      expect(b.getURL()).toBe unprojectedURL
+      b.setProjection null
+      expect(b.getURL()).toBe unprojectedURL
+      b.setProjection ['object', 'number']
+      expect(b.getURL()).toBe unprojectedURL + '&project=object,number'
+
   describe 'save', ->
 
     it 'saves to db/<urlRoot>', ->
@@ -95,7 +112,7 @@ describe 'CocoModel', ->
   xdescribe 'Achievement polling', ->
     NewAchievementCollection = require 'collections/NewAchievementCollection'
     EarnedAchievement = require 'models/EarnedAchievement'
-    
+
     # TODO: Figure out how to do debounce in tests so that this test doesn't need to use keepDoingUntil
 
     it 'achievements are polled upon saving a model', (done) ->
@@ -133,4 +150,3 @@ describe 'CocoModel', ->
           else return ready false
 
           request.response {status:200, responseText: JSON.stringify me}
-