Thanks for contacting us.
Since we do not have a RadRibbonButton
component in our suite, I guess you tried to use the RadRibbonBar
and got this exception.
However, I have investigated the case and was not able to reproduce this exception. Please note that if you have installed previous versions of our product, you will have to uninstall them and make sure that all assemblies have been removed before installing a newer version. It is a common case that older DLLs cause exceptions when newer versions are installed.
I recommend you uninstall your current version, make sure that all assemblies from the Global Assembly Cache which names start with Telerik.WinControls.*
and the assembly
TelerikCommon are removed and after that start a new, fresh installation of RadContols for WinForms.
This should solve the issue that you have experienced.
Do not hesitate to get back to me in case you further experience any impediments.
the Telerik team