You cannot use two different versions of the controls in an application. The exception is thrown because you are adding a UltraButtonTool of version 10.2 to a 8.2 Ribbon.

Upgrade your solution to use a single version of Infragistics controls.

Hi ,

There is another problem i am  facing with my solution, earlier i uses the Infragisticsv8.2 with SCSF May 2007, my application running smoothly. now i have upgraded the solution to infragisticv10.2. i updated  only one of my module suppose 'ABC'........the shell application contains UltraToolbarmanagerv8.2  that uses Ribbon style and has registered different UIExtensioSites like RibbonTab,TabGroups,GroupTools etc ,as modules loaded in the CAB framework they add there ButtonTool in the Ribbon of shell.now the 'ABC' module when loaded and add the buttontool to the UIExtensionSite RibbonTab group my application throws error as 

"UIElement must be of Infragistics.Win.UltraWinToolbars.UltraWinToolbase "

i can't understand where i am doing ,Please help me out