KryptonTextBox has thrown an unhandled exception

[nikhilkashid]

Hi,
I am use Krypton tools for my project but i got this following error in my project

The control ComponentFactory.Krypton.Toolkit.KryptonTextBox has thrown an unhandled exception in the designer and has been disabled.
Exception:
Unable to cast object of type 'ComponentFactory.Krypton.Toolkit.KryptonTextBox' to type 'ComponentFactory.Krypton.Toolkit.KryptonTextBox'.
Stack trace:
at ComponentFactory.Krypton.Toolkit.KryptonTextBoxDesigner.get_SelectionRules()