Problem using the RadDataPager

[SivaPrasad Bevara]

Hi,

We are using Telerik Controls for Silverlight 5 (Version: 2012.3.1203.1050)

We are using "RadGridView, RadDataPager and RadDataFilter" in a page.
We are Sourcing the GridView from the Filter 
ItemsSource="{Binding FilteredSource, ElementName=dFltErrors}
 and sourcing the RadDatePager from the GridView.
Source="{Binding Items, ElementName=grdErrorsGrid}" .

We are getting the following error in the initial grid load.
"PageIndex cannot be negative when pagesize is positive"
Parametername: newPageIndex

We are getting this error, when I put all 3 controls ("RadGridView, RadDataPager and RadDataFilter") in a separate usercontrol and adding that user control to a stack panel in my page dynamically.
It worked well for me in the previous version of the Telerik Controls (Version: 2012.1.215.1050)

Please suggest.

Regards,
SivaPrasad.B