ShowEachLanguage=1 parameter and TemplateInformation gives nullreference exception

[AndreasKarlsen]

I have created a report with a scanner based on ASR.Reports.Items.QueryScanner, using the query Query=./descendant-or-self::*|Root={Root}|ShowEachLanguage=1.
It returns the results as expected with the viewers ItemViewer or ItemBasic, however, if I use TemplateInformation, I get the following null reference exception with the following stacktrace:

[NullReferenceException: Object reference not set to an instance of an object.]
   ASR.Reports.Items.ItemViewer.getColumnText(String name, Item itemElement) +1233
   ASR.Reports.Items.ItemViewer.Display(DisplayElement dElement) +294
   ASR.Interface.Report.IntializeDisplayElement(Object resultItem) +130
   System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +222
   System.Linq.Buffer`1..ctor(IEnumerable`1 source) +249
   System.Linq.Enumerable.ToArray(IEnumerable`1 source) +105
   ASR.Interface.Report.DisplayElements(Int32 start, Int32 count) +204
   ASR.App.MainForm.PopulateItemList(Int32 start, Int32 count) +280
   ASR.App.MainForm.RunFinished(Message message) +45

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0
   System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +128
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +146
   Sitecore.Web.UI.Sheer.BaseForm.HandleMessage(Message message) +784
   ASR.App.MainForm.HandleMessage(Message message) +458
   Sitecore.Shell.Framework.Commands.MessageCommand.Execute(CommandContext context) +611
   Sitecore.Web.UI.Sheer.ClientPage.Dispatch(String command) +192
   Sitecore.Web.UI.Sheer.ClientPage.RaiseEvent() +124
   Sitecore.Web.UI.Sheer.ClientPage.OnPreRender(EventArgs e) +825
   System.Web.UI.Control.PreRenderRecursiveInternal() +107
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +7675

I can see, that it happens in the following file, but I cannot identify why:
https://github.com/Sitecore/AdvancedSystemReporter/blob/master/Reports/Viewers/ItemViewer.cs