Fixed IE9 issues.

app/assets/javascripts/app/lib/app_post/task_manager.js.coffee

@@ -222,7 +222,6 @@ class _taskManagerSingleton extends App.Controller
       worker.release()
     @workersStarted[ key ] = false
     @taskDestroy(task)
-    App.Event.trigger 'task:render'
 
   notify: ( key ) =>
     task = @get( key )
@@ -262,8 +261,10 @@ class _taskManagerSingleton extends App.Controller
 
   taskDestroy: (task) ->
     @clearDelay( task.id, 'taskbar' )
-    task.destroy()
-    App.Event.trigger 'task:render'
+    task.destroy(
+      success: ->
+        App.Event.trigger 'task:render'
+    )
 
   tasksInitial: =>
     # reopen tasks

test/browser_test_helper.rb

@@ -225,7 +225,6 @@ class TestCase < Test::Unit::TestCase
       instance.navigate.refresh
     elsif action[:execute] == 'js'
       result = instance.execute_script( action[:value] )
-      puts "JS RESULT" + result.inspect
     elsif action[:link]
       if action[:link].match '###stack###'
         action[:link].gsub! '###stack###', @stack