Running an experiment may throw an exception when updating the ExecutionTime

[abeham]

To reproduce:

1. Create a new experiment
2. Create a new batch run
3. Create a new GeneticAlgorithm and a TravelingSalesmanProblem
4. With all these elements open in the same view, click run on the experiment
5. Click in the experiment's optimizer list to hide all views

An exception is thrown in HeuristicLab.Core.Views.EngineView.cs:97

Exception detail:
System.NullReferenceException occurred
  Message=Object reference not set to an instance of an object.
  Source=HeuristicLab.Core.Views-3.3
  StackTrace:
   at HeuristicLab.Core.Views.EngineView.Content_ExecutionTimeChanged(Object sender, EventArgs e)
   at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
   at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.ContainerControl.WndProc(Message& m)
   at System.Windows.Forms.UserControl.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)
   at HeuristicLab.Optimizer.HeuristicLabOptimizerApplication.Run()
   at HeuristicLab.PluginInfrastructure.DefaultApplicationManager.Run(ApplicationDescription appInfo) in D:\HL3\trunk\sources\HeuristicLab.PluginInfrastructure\3.3\DefaultApplicationManager.cs:line 123
   at HeuristicLab.PluginInfrastructure.DefaultApplicationManager.Run(ApplicationDescription appInfo)
   at HeuristicLab.PluginInfrastructure.Manager.PluginManager.Run(ApplicationDescription appInfo) in D:\HL3\trunk\sources\HeuristicLab.PluginInfrastructure\3.3\Manager\PluginManager.cs:line 130
   at HeuristicLab.PluginInfrastructure.Starter.StarterForm.<>c__DisplayClass8.<StartApplication>b__6() in D:\HL3\trunk\sources\HeuristicLab.PluginInfrastructure\3.3\Starter\StarterForm.cs:line 144

[swagner]

Fixed in r4216.

[swagner]

Milestone Iteration 4 deleted

[swagner]

Milestone Current deleted