Weird kangaroo1 control mini window crash

Hello,

the last two days the pop up control window of kangaroo 1 crashes rhino.

popup comes normally after double click, but even for simple simulations, when play is pressed everything becomes unresponsive, no canvas, sliders etc access. Rhino either has to be right click close program or crashes with the following log file.

System::Windows::Forms::Application::ThreadException event occured

SENDER: System.Threading.Thread

EXCEPTION: System.ComponentModel.Win32Exception
MESSAGE: Error creating window handle.
SOURCE: System.Windows.Forms
CALL STACK
   at System.Windows.Forms.NativeWindow.CreateHandle(CreateParams cp)
   at System.Windows.Forms.Control.CreateHandle()
   at System.Windows.Forms.Control.get_Handle()
   at System.Windows.Forms.VisualStyles.VisualStyleRenderer.DrawParentBackground(IDeviceContext dc, Rectangle bounds, Control childControl)
   at System.Windows.Forms.ButtonRenderer.DrawParentBackground(Graphics g, Rectangle bounds, Control childControl)
   at System.Windows.Forms.ButtonInternal.ButtonStandardAdapter.PaintThemedButtonBackground(PaintEventArgs e, Rectangle bounds, Boolean up)
   at System.Windows.Forms.ButtonInternal.ButtonStandardAdapter.PaintWorker(PaintEventArgs e, Boolean up, CheckState state)
   at System.Windows.Forms.ButtonBase.OnPaint(PaintEventArgs pevent)
   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer)
   at System.Windows.Forms.Control.WmPaint(Message& m)
   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)

more or less i think this error describes what happens with the controls pop up window. 

but why it happens? i cant recall any recent changes to my system.

Does anyone have any ideas what is happening, or have come across the same problem?

thank you.

best

alex