New Post: An exception of type 'System.Runtime.InteropServices.COMException' occurred in CubicOrange.Windows.Forms.ActiveDirectory.dll but was not handled in user code

I use TaskEditDialog. On Window 2008 when I try to open "Change User or Group" dialog I get message:
"the program cannot open the required dialog box because it cannot determine whether the computer named '' is joined to a domain"
After closing the dialog I get unhandled exception:

************** Exception Text **************
System.Runtime.InteropServices.COMException (0x80070005): IDsObjectPicker.Initialize failed
   at CubicOrange.Windows.Forms.ActiveDirectory.DirectoryObjectPickerDialog.Initialize()
   at CubicOrange.Windows.Forms.ActiveDirectory.DirectoryObjectPickerDialog.RunDialog(IntPtr hwndOwner)
   at System.Windows.Forms.CommonDialog.ShowDialog(IWin32Window owner)
   at Microsoft.Win32.TaskScheduler.HelperMethods.SelectAccount(IWin32Window parent, String targetComputerName, String& acctName, Boolean& isGroup, Boolean& isService, String& sid) in c:\spb.Common Components\TaskScheduler\TaskService\TaskEditor\HelperMethods.cs:line 18
   at Microsoft.Win32.TaskScheduler.TaskPropertiesControl.InvokeObjectPicker(String targetComputerName) in c:\spb.Common Components\TaskScheduler\TaskService\TaskEditor\TaskPropertiesControl.cs:line 632
   at Microsoft.Win32.TaskScheduler.TaskPropertiesControl.changePrincipalButton_Click(Object sender, EventArgs e) in c:\spb.Common Components\TaskScheduler\TaskService\TaskEditor\TaskPropertiesControl.cs:line 538
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

I use 2.3.1 version. Before that I used 2.2.2 and got the same message and exception on Windows 8.