Problem in RadPanelBar In 'Mozilla Firefox' or in 'Google Chrome'

[Pravat]

Hi expert,

           I am using telerik:RadPanelBar. the RadPanelItem is binding at runtime. It is working fine in IE.
But when I am browsing in 'Mozilla Firefox' or in 'Google Chrome' getting following error "Assertion Failed: Length of elements and json must be the same! "

Could you please help out how to solve this problem.

Thanks & regards,
Pravat Sharma