Exception when cloning IndexedDataRow

[gkronber]

I loaded an experiment with a QualityPerEvaluationsAnalyser from a file. When I clone the experiment an exception occurrs:

HeuristicLab version: 3.3.15.15587
ArgumentNullException: Value cannot be null.
Parameter name: source
   at System.Linq.Enumerable.Select[TSource,TResult](IEnumerable`1 source, Func`2 selector)
   at HeuristicLab.Analysis.IndexedDataRow`1..ctor(IndexedDataRow`1 original, Cloner cloner)
   at HeuristicLab.Analysis.IndexedDataRow`1.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Core.KeyedItemCollection`2..ctor(KeyedItemCollection`2 original, Cloner cloner)
   at HeuristicLab.Core.NamedItemCollection`1.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Analysis.IndexedDataTable`1..ctor(IndexedDataTable`1 original, Cloner cloner)
   at HeuristicLab.Analysis.IndexedDataTable`1.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Optimization.ResultParameter`1..ctor(ResultParameter`1 original, Cloner cloner)
   at HeuristicLab.Optimization.ResultParameter`1.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Core.KeyedItemCollection`2..ctor(KeyedItemCollection`2 original, Cloner cloner)
   at HeuristicLab.Core.ParameterCollection.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Operators.Operator..ctor(Operator original, Cloner cloner)
   at HeuristicLab.Analysis.QualityPerEvaluationsAnalyzer.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Parameters.OptionalValueParameter`1..ctor(OptionalValueParameter`1 original, Cloner cloner)
   at HeuristicLab.Parameters.OptionalValueParameter`1.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Core.KeyedItemCollection`2..ctor(KeyedItemCollection`2 original, Cloner cloner)
   at HeuristicLab.Core.ParameterCollection.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Operators.Operator..ctor(Operator original, Cloner cloner)
   at HeuristicLab.Analysis.MultiAnalyzer.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Parameters.OptionalValueParameter`1..ctor(OptionalValueParameter`1 original, Cloner cloner)
   at HeuristicLab.Parameters.ValueParameter`1.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Core.KeyedItemCollection`2..ctor(KeyedItemCollection`2 original, Cloner cloner)
   at HeuristicLab.Core.ParameterCollection.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Optimization.Algorithm..ctor(Algorithm original, Cloner cloner)
   at HeuristicLab.Optimization.EngineAlgorithm..ctor(EngineAlgorithm original, Cloner cloner)
   at HeuristicLab.Algorithms.GeneticAlgorithm.GeneticAlgorithm.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Optimization.BatchRun..ctor(BatchRun original, Cloner cloner)
   at HeuristicLab.Optimization.BatchRun.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at HeuristicLab.Core.ItemList`1..ctor(ItemList`1 original, Cloner cloner)
   at HeuristicLab.Optimization.OptimizerList.Clone(Cloner cloner)
   at HeuristicLab.Common.Cloner.Clone[T](T obj)
   at HeuristicLab.Optimization.Experiment..ctor(Experiment original, Cloner cloner)
   at HeuristicLab.Optimization.Experiment.Clone(Cloner cloner)
   at HeuristicLab.Optimizer.MenuItems.CopyToClipboardMenuItem.Execute()
   at HeuristicLab.MainForm.WindowsForms.MainForm.ToolStripItemClicked(Object sender, EventArgs e)

[abeham]

Something wrong with the results parameter... I will have a look.

[abeham]

I can't reproduce the issue using the stable build.

I loaded the experiment that you provided and copied it to clipboard. I created a new GA with the analyzer, ran, paused, stored, restored, copied it to clipboard.

[gkronber]

Thanks for investigating this. I'll try to reproduce the problem.

[gkronber]

I tried to reproduce this with a current version of the trunk and could _not_ reproduce this with the following steps.

1. New OSGP
2. New SymReg
3. QualityPerEvaluations analyzer
4. Start
5. Pause
6. Clone to clipboard
7. Open clone and resume