Callbacks not working for SOME comboboxes after update to 2012.3.1016.40

[Fred Taylor]

After update to latest control version, some of my ComboBoxes will not callback to get results for "load on demand" scenarios.  I have three load on demand combo boxes on one page.  One continues to work, two do not.  In the firefox debugger I can see the working control performing a postback when I type in the box.  The other two do nothing when type.

Works:

<telerik:RadComboBox ID="cboEvents" runat="server"
 AutoPostBack="false" DropDownWidth="675px" EmptyMessage=""
 Height="200px" HighlightTemplatedItems="true" EnableLoadOnDemand="True" AllowCustomText="True" EnableVirtualScrolling="True" ShowMoreResultsBox="True" OnItemsRequested="cboEvent_ItemsRequested"
 Skin="Windows7" Width="300px">

Doesn't work:

<telerik:RadComboBox ID="cboURL" runat="server" AllowCustomText="True"
                                AutoPostBack="false" DropDownWidth="675px" EmptyMessage=""
                                EnableLoadOnDemand="True" EnableVirtualScrolling="True" Height="200px"
                                HighlightTemplatedItems="true"
                                ShowMoreResultsBox="True" OnItemsRequested="cboURL_ItemsRequested"
                                Skin="Windows7" Width="500px"
                                EnableAutomaticLoadOnDemand="True">

[Fred Taylor]

Found the problem.  When these attributes are on the combobox:

<WebServiceSettings>
<ODataSettings InitialContainerName="">
  </ODataSettings>
 </WebServiceSettings>

The comboxbox will not callback.  The attributes were added in a previous version of the controls.