I'm having an issue showing data in my combobox. It loads the data but doesn't display the displayField value for selecting. Instead I just see the correct number of lines as 2 pixel high blanks when I drop the combobox down. Any help would be appreciated.

<ext-comboBox fieldLabel="Org" labelWidth="50" padding="3" displayField="Name" valueField="Id">
    <listeners>
        <select handler="alert('hello world');" />
    </listeners>
    <store>
        <ext-store autoLoad="true">
            <proxy>
                <ext-ajaxProxy url="@Url.Action("GetOrgs", "Header")"/>
            </proxy>
            <fields>
                <ext-integerDataField name="Id" />
                <ext-stringDataField name="Name" />
            </fields>
        </ext-store>
    </store>
</ext-comboBox>