Thank you for your interest in TCEK.
Regarding your issues with setting the main menu strip. RadMenu cannot be set as main menu strip of a WinForms Form as it is of different type. You could try dock the RadMenu control on the top of the form and expose it as a property if you need access to it from other classes.
Please, do not hesitate to write us back if you have any other questions, feedback or suggestions for Telerik CAB Enabling Kit.
the Telerik team