diff --git a/app/lib/world/GoalManager.coffee b/app/lib/world/GoalManager.coffee
index 8f629989e..a3d443848 100644
--- a/app/lib/world/GoalManager.coffee
+++ b/app/lib/world/GoalManager.coffee
@@ -44,6 +44,7 @@ module.exports = class GoalManager extends CocoClass
     'world:thang-touched-goal': 'onThangTouchedGoal'
     'world:thang-left-map': 'onThangLeftMap'
     'world:thang-collected-item': 'onThangCollectedItem'
+    'world:user-code-problem': 'onUserCodeProblem'
     'world:ended': 'onWorldEnded'
 
   onLevelRestarted: ->
@@ -140,6 +141,8 @@ module.exports = class GoalManager extends CocoClass
       @initGoalState(state, [goal.getToLocations?.who, goal.keepFromLocations?.who], 'arrived')
       @initGoalState(state, [goal.leaveOffSides?.who, goal.keepFromLeavingOffSides?.who], 'left')
       @initGoalState(state, [goal.collectThangs?.targets, goal.keepFromCollectingThangs?.targets], 'collected')
+      @initGoalState(state, [goal.linesOfCode?.who], 'lines')  # TODO: find out how many lines there are
+      @initGoalState(state, [goal.codeProblems?.who], 'problems')  # TODO: count initial problems, not just runtime
       @goalStates[goal.id] = state
 
   onThangDied: (e, frameNumber) ->
@@ -187,6 +190,14 @@ module.exports = class GoalManager extends CocoClass
     return unless thang.id in who or thang.team in who
     @updateGoalState(goalID, itemID, 'collected', frameNumber)
 
+  onUserCodeProblem: (e, frameNumber) ->
+    for goal in @goals ? [] when goal.codeProblems
+      @checkCodeProblem goal.id, goal.codeProblems.who, e.thang, frameNumber
+
+  checkCodeProblem: (goalID, who, thang, frameNumber) ->
+    return unless thang.id in who or thang.team in who
+    @updateGoalState goal.id, thang.id, 'problems', frameNumber
+
   wrapUpGoalStates: (finalFrame) ->
     for goalID, state of @goalStates
       if state.status is null
@@ -247,7 +258,7 @@ module.exports = class GoalManager extends CocoClass
       # saveThangs: by default we would want to save all the Thangs, which means that we would want none of them to be 'done'
       numNeeded = _.size(stateThangs) - Math.max((goal.howMany ? 1), _.size stateThangs) + 1
     numDone = _.filter(stateThangs).length
-    #console.log 'needed', numNeeded, 'done', numDone, 'of total', _.size(stateThangs), 'with how many', goal.howMany, 'and stateThangs', stateThangs
+    #console.log 'needed', numNeeded, 'done', numDone, 'of total', _.size(stateThangs), 'with how many', goal.howMany, 'and stateThangs', stateThangs, 'for', goalID, thangID, 'on frame', frameNumber
     return unless numDone >= numNeeded
     return if state.status and not success  # already failed it; don't wipe keyframe
     state.status = if success then 'success' else 'failure'
@@ -278,6 +289,8 @@ module.exports = class GoalManager extends CocoClass
     keepFromLeavingOffSides: 0
     collectThangs: 1
     keepFromCollectingThangs: 0
+    linesOfCode: 0
+    codeProblems: 0
 
   updateCodeGoalStates: ->
     # TODO
diff --git a/app/lib/world/world.coffee b/app/lib/world/world.coffee
index 34f24153a..7b967a86f 100644
--- a/app/lib/world/world.coffee
+++ b/app/lib/world/world.coffee
@@ -201,9 +201,9 @@ module.exports = class World
     @levelID = level.slug
     @levelComponents = level.levelComponents
     @thangTypes = level.thangTypes
+    @loadScriptsFromLevel level
     @loadSystemsFromLevel level
     @loadThangsFromLevel level, willSimulate
-    @loadScriptsFromLevel level
     system.start @thangs for system in @systems
 
   loadSystemsFromLevel: (level) ->
diff --git a/app/schemas/subscriptions/world.coffee b/app/schemas/subscriptions/world.coffee
index 2e38a32b2..31076e148 100644
--- a/app/schemas/subscriptions/world.coffee
+++ b/app/schemas/subscriptions/world.coffee
@@ -30,3 +30,12 @@ module.exports =
     thang: {type: 'object'}
 
   'world:custom-script-trigger': {type: 'object'}
+
+  'world:user-code-problem': c.object {required: ['thang', 'problem']},
+    thang: {type: 'object'}
+    problem: c.object {required: ['message', 'level', 'type']},  #, 'userInfo', 'error']},
+      userInfo: {type: 'object'}
+      message: {type: 'string'}
+      level: {type: 'string', enum: ['info', 'warning', 'error']}
+      type: {type: 'string'}
+      error: {type: 'object'}
diff --git a/app/views/play/level/modal/HeroVictoryModal.coffee b/app/views/play/level/modal/HeroVictoryModal.coffee
index 2158eba75..87097eba6 100644
--- a/app/views/play/level/modal/HeroVictoryModal.coffee
+++ b/app/views/play/level/modal/HeroVictoryModal.coffee
@@ -146,7 +146,7 @@ module.exports = class HeroVictoryModal extends ModalView
   tickNumberAnimation: =>
     # TODO: make sure the animation pulses happen when the numbers go up and sounds play (up to a max speed)
     return @endAnimateNumbers() unless panel = @numericalItemPanels[0]
-    duration = Math.log10(panel.number + 1) * 1000
+    duration = Math.log(panel.number + 1) / Math.LN10 * 1000  # Math.log10 is ES6
     ratio = @getEaseRatio (new Date() - @numberAnimationStart), duration
     if panel.unit is 'xp'
       totalXP = @totalXPAnimated + Math.floor(ratio * panel.number)