I'm having a problem when in edit mode with sitefinity. The problem is that some sitefinity controls are rendered as "object reference not set to an instance of an object". The only sitefinity controls that render corectly are Site Menu, Site PanelBar, Site Tabstrip and Site Treeview. It would be helpful to know what object is generating the null reference exception, any idea on how i can find out?
The problem seemed to appear i think after i upgraded the telerik controls to Q1 2010, also the controls which were already added render their content correctly, but the same problem persists with them when they are in edit mode.