Hi Sean Beaulac,
It seems that you have references to different versions of Telerik assemblies (also known as dll hell). Please make sure that all the references of the Sales Dashboard solution point to one assembly version of each of the suites - WinForms, OpenAccess, WPF.
If this does not help, please send us at least the stack trace of the exception. This will allow us to assist you further.
Regards,
Nikolay
the Telerik team
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