[OCM CE U4] WFS Service encountered the following issue

Unable to import WFS data (GeoServer Version 2.2.3), got these errors:

WFS 2.0:

CE:

WFS Service encountered the following issue: 
java.lang.RuntimeException: 
Failed to get property: {http://www.opengis.net/wfs/2.0}
boundedBy Failed to get property: {http://www.opengis.net/wfs/2.0}
boundedBy java.io.IOException null 
Cannot do natural order without a primary key

V8i: WFS Service encountered the following issue: java.lang.RuntimeException: Failed to get property: {www.opengis.net/.../2.0}boundedBy Failed to g

WFS 1.1.0:

CONNECT

Exception: 
The operation has timed out
System.Net.WebException: The operation has timed out
   at System.Net.HttpWebRequest.GetResponse()
   at Bentley.EngineeringContent.Storage.Wfs.IO.WebResource.IssueRequest()
   at Bentley.EngineeringContent.Storage.Wfs.Connection.WfsProxy.ExecuteOperation[ReturnType](WfsOperation`1 wfsOperation, ExecutionController executionController)
   at Bentley.EngineeringContent.Storage.Wfs.Query.WfsStorageQueryExecutor.RetrieveDatasets(IEnumerable`1 featureRequests, WfsProxy wfsProxy, ECCursorModifiers cursorModifiers, ExecutionController executionController)
   at Bentley.EngineeringContent.Storage.Wfs.Query.WfsStorageQueryExecutor.ExecuteGetFeatureOperation(IEnumerable`1 featureRequests, WfsStorageConnectionContext connectionContext, ECCursorModifiers cursorModifiers, ExecutionController executionController)
   at Bentley.EngineeringContent.Storage.Wfs.WfsStorage.ExecuteQuery(IECCriteria criteria, ECCursorModifiers modifiers, IExtendedParameters extendedParameters)
   at Bentley.Geospatial.DataInterchange.GDIImportProcessor.ImportStorageImport(IImportCriteria criteria, IStorageImportCriteria storageImport, Boolean cancellable)
   at Bentley.Geospatial.DataInterchange.GDIImportProcessor.Import(IImportCriteria importCrit, IStorageImportCriteria singleStorage)

v8i:WFS Service encountered the following issue: org.xml.sax.SAXException: Attempted to construct illegal filter - I dont understand the tag: gml:Polygon.

WFS 1.0.0:

CONNECT - also timeouts

v8i - Import Complete (3904 features in 5.086 seconds).