[Geoserver-users] Can't solve “OperationNotSupported” error on WFS GetFeature request

Hi all,
I'm working on a web map viewer using OpenLayers, ExtJS, GeoExt and GXP.
I've added a LayerTree (gxp_layertree) that shows layers from various WMS
servers from different GeoServer versions. I've also configured a
FeatureManager (gxp_featuremanager) with 'autoLoadFeatures = true' and a
FeatureGrid (gxp_featuregrid).

My problem appears when I click on a layer tree node and a WFS GetFeature
request fires: the response is always "OperationNotSupported" "No such
operation wfs null WfsDispatcher".

I've checked the xml body content with the embedded 'demo requests' in
GeoServer and it's Ok. That is:

*<wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs&quot; service="WFS"
version="1.1.0" maxFeatures="100"
xsi:schemaLocation="http://www.opengis.net/wfs
http://schemas.opengis.net/wfs/1.1.0/wfs.xsd&quot;
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance&quot;&gt;
  <wfs:Query typeName="feature:mce_prov_escuelas" srsName="EPSG:4326"
xmlns:feature="mce">
    <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc&quot;&gt;
      <ogc:BBOX>
         <ogc:PropertyName>the_geom</ogc:PropertyName>
         <gml:Envelope xmlns:gml="http://www.opengis.net/gml&quot;
srsName="EPSG:4326">
            <gml:lowerCorner>-62.406926496825
-26.770412516161</gml:lowerCorner>
            <gml:upperCorner>-57.557744198657
-22.49170214764</gml:upperCorner>
         </gml:Envelope>
      </ogc:BBOX>
     </ogc:Filter>
  </wfs:Query>
</wfs:GetFeature>*

It's a POST request and here's a copy of the headers (from Firebug):

*REQUEST HEADERS
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding gzip, deflate
Accept-Language es-ar,es;q=0.8,en-us;q=0.5,en;q=0.3
Content-Length 723
Content-Type application/xml; charset=UTF-8
Host localhost
Referer http://localhost/visor/index.html
User-Agent Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:24.0)
Gecko/20100101 Firefox/24.0
X-Requested-With XMLHttpRequest*

Any clue?? I've tried everything I know and googled it without many results.
Thanks in advance, and sorry for my grammatical mistakes.

Greets from Argentina.

Cristian

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