Previous exception:DTRC-650 Build305 JetBrains.ReSharper.Util.InternalErrorException: Failed to compare two elements in the array. An exception has occurred during request execution ---> System.InvalidOperationException: Failed to compare two elements in the array. ---> System.NullReferenceException: Object reference not set to an instance of an object. at JetBrains.dotTrace.ViewControls.Memory.ClassTreeView.NodeComparer.Compare(Object x, Object y) in C:\Agent\work\Server\dotTrace-Main\src\ViewControls.Memory\src\ClassTreeView\NodeComparer.cs:line 22 at JetBrains.ReSharper.Util.ReverseComparer.Compare(Object x, Object y) in c:\Agent\work\Server\ReSharper2.0\src\Util\src\ReverseComparer.cs:line 20 at JetBrains.dotTrace.TreeViewControl.Support.AbstractTreeNodeComparer.Compare(Object x, Object y) in C:\Agent\work\Server\dotTrace-Main\src\TreeViewControl\src\Support\AbstractTreeNodeComparer.cs:line 18 at JetBrains.ReSharper.UI.AbstractTreeBuilder.AbstractTreeBuilder.NodesComparer.Compare(Object x, Object y) in c:\Agent\work\Server\ReSharper2.0\src\AbstractTreeBuilder\src\AbstractTreeBuilder.cs:line 311 at System.Array.GetPivotValue(IComparer comparer, Array keys, Int32 left, Int32 right) — End of inner exception stack trace — at System.Array.GetPivotValue(IComparer comparer, Array keys, Int32 left, Int32 right) at System.Array.SorterObjectArray.QuickSort(Int32 left, Int32 right) at System.Array.Sort(Array keys, Array items, Int32 index, Int32 length, IComparer comparer) at System.Collections.ArrayList.Sort(Int32 index, Int32 count, IComparer comparer) at System.Collections.ArrayList.Sort(IComparer comparer) at JetBrains.dotTrace.TreeViewControl.MutableTreeNodeCollection.Sort(IComparer comparer) in C:\Agent\work\Server\dotTrace-Main\src\TreeViewControl\src\TreeNodeCollection.cs:line 133 at JetBrains.dotTrace.TreeViewControl.AbstractTreeNode.SortChildren(IComparer nodeComparer) in C:\Agent\work\Server\dotTrace-Main\src\TreeViewControl\src\TreeControl\AbstractTreeNode.cs:line 83 at JetBrains.ReSharper.UI.AbstractTreeBuilder.AbstractTreeBuilder.SortSubtree(IAbstractTreeNode rootNode) in c:\Agent\work\Server\ReSharper2.0\src\AbstractTreeBuilder\src\AbstractTreeBuilder.cs:line 135 at JetBrains.dotTrace.ViewControls.Memory.Utils.DelayedSortController.OnSort() in C:\Agent\work\Server\dotTrace-Main\src\ViewControls.Memory\src\Utils\DelayedSortController.cs:line 80 at JetBrains.ReSharper.Util.Alarm.OnTimer(Object sender, EventArgs e) in c:\Agent\work\Server\ReSharper2.0\src\Shell\src\Alarm.cs:line 202 — End of inner exception stack trace — at JetBrains.ReSharper.Util.Logger.LogExceptionEx(Exception, String, Boolean) in c:\Agent\work\Server\ReSharper2.0\src\Util\src\Logger.cs:line 331 column 9 at JetBrains.ReSharper.Util.Logger.LogException(String, Exception) in c:\Agent\work\Server\ReSharper2.0\src\Util\src\Logger.cs:line 348 column 5 at JetBrains.ReSharper.Util.Alarm.OnTimer(Object, EventArgs) in c:\Agent\work\Server\ReSharper2.0\src\Shell\src\Alarm.cs:line 206 column 15 at System.Windows.Forms.Timer.OnTick(EventArgs) at System.Windows.Forms.TimerNativeWindow.WndProc(Message&) at System.Windows.Forms.NativeWindow.Callback(IntPtr, Int32, IntPtr, IntPtr) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&) at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32, Int32, Int32) at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32, ApplicationContext) at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32, ApplicationContext) at System.Windows.Forms.Application.Run(Form) at JetBrains.dotTrace.PocketTasks.RunMainFormTask.Execute() in C:\Agent\work\Server\dotTrace-Main\src\dotTrace2\src\PocketTasks\RunMainFormTask.cs:line 17 column 3 at JetBrains.dotTrace.PocketTasks.ProfileSolutionTask.Execute() in C:\Agent\work\Server\dotTrace-Main\src\dotTrace2\src\PocketTasks\ProfileSolutionTask.cs:line 32 column 5 at JetBrains.dotTrace.MainStuff.Main(String[]) in C:\Agent\work\Server\dotTrace-Main\src\dotTrace2\src\MainStuff.cs:line 38 column 8