Possible Underflow Error???

I had a user using an app that uses the TabStrip control, and they received the following error:

Top Level Exception
Type: System.ArithmeticException
Message: Overflow o underflow durante un'operazione aritmetica.
Source: System.Drawing
Stack Trace: at System.Drawing.Font.Initialize(FontFamily family, Single emSize, FontStyle style, GraphicsUnit unit, Byte gdiCharSet, Boolean gdiVerticalFont)
at System.Drawing.Font..ctor(FontFamily family, Single emSize, FontStyle style, GraphicsUnit unit)
at System.Drawing.Font..ctor(Font prototype, FontStyle newStyle)
at ActiproSoftware.TabStripPanel.DocumentListTabStripPanel.OnPaint(PaintEventArgs e)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
at System.Windows.Forms.Control.WmPaint(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Also, the location in the app where the tab strip was located there was simply a big red X in place of the tab strip. Since the only non .NET framework error is in the TabStripPanel code, is this something that might be an issue with the TabStrip control?

Thanks