SDE to KML Translation not working

A problem with the SDE -> KML geoserver translation, in that all requests to translate from SDE to KML (when all other translations/renderings work) result in an error being raised. Per the mailing list, it appears to be a "like a classcast exception at the root." The log of the error is attached:

1449522 [FINE] org.vfny.geoserver.util.requests.readers.KvpRequestReader - clean request is bbox=-130,24,-66,50&request=GetMap&layers=glc:GLC.WATERSHEDS&width=800&height=400&srs=EPSG:4326&styles=green&format=application/vnd.google-earth.kml xml
1449523 [FINE] org.vfny.geoserver.util.requests.readers.KvpRequestReader - returning parsed

{SRS=EPSG:4326, LAYERS=glc:GLC.WATERSHEDS, BBOX=-130,24,-66,50, HEIGHT=400, REQUEST=GetMap, STYLES=green, WIDTH=800, FORMAT=application/vnd.google-earth.kml xml}

1449524 [INFO] org.vfny.geoserver.servlets.AbstractService - Looking for configured service responses' strategy
1449524 [INFO] org.vfny.geoserver.servlets.AbstractService - Looking for configured service strategy PARTIAL-BUFFER
1449525 [FINE] org.vfny.geoserver.servlets.AbstractService - verifying configured strategy
1449525 [INFO] org.vfny.geoserver.servlets.AbstractService - Using service strategy class org.vfny.geoserver.servlets.PartialBufferStrategy
1449525 [INFO] org.vfny.geoserver.servlets.AbstractService - Set buffer size to 50
1449526 [FINE] org.vfny.geoserver.servlets.AbstractService - reading request: bbox=-130,24,-66,50&request=GetMap&layers=glc:GLC.WATERSHEDS&width=800&height=400&srs=EPSG:4326&styles=green&format=application/vnd.google-earth.kml+xml
1449527 [FINE] org.vfny.geoserver.global.Data - getting type glc:GLC.WATERSHEDS
1449528 [FINE] org.geotools.styling.StyleImpl - number of fts set 1
1449528 [FINE] org.vfny.geoserver.wms.requests.GetMapKvpReader - establishing green style for glc:GLC.WATERSHEDS
1449530 [INFO] org.vfny.geoserver.servlets.AbstractService - handling request: org.vfny.geoserver.wms.requests.GetMapRequest@8845df8b
1449531 [FINE] org.vfny.geoserver.servlets.AbstractService - strategy is: org.vfny.geoserver.servlets.FileStrategy@c3d9ac
1449534 [FINE] org.vfny.geoserver.wms.responses.GetMapResponse - setting up map
1449554 [FINE] org.vfny.geoserver.servlets.AbstractService - mime type is: application/vnd.google-earth.kml+xml
1449556 [FINE] org.geotools.data.arcsde.ArcSDEQuery - Creating new ArcSDEQuery
1449557 [FINE] org.geotools.data.arcsde.ArcSDEConnectionPool - com.esri.sde.sdk.client.SeConnection@fba502 now in use
1449558 [FINE] org.geotools.data.arcsde.ArcSDEQuery - constructing new sql query with connection: com.esri.sde.sdk.client.SeConnection@fba502, propnames: [OBJECTID, AREA, PERIMETER, UNITNAME, LAKEBASIN, SUBDIV, SUBSUBDIV, SUBDIVNAME, NOMSUBDIV, HUC, BASIN, REGION, SUBREGION, ACCTUNIT, HYDROUNIT, SHAPE] sqlConstruct: com.esri.sde.sdk.client.SeSqlConstruct@14955ec
1449558 [SEVERE] org.geotools.data.arcsde.ArcSDEDataStore - Error building SeFilter
1449559 [FINE] org.geotools.data.arcsde.ArcSDEConnectionPool - trying to release a seconnection: com.esri.sde.sdk.client.SeConnection@fba502
1449560 [FINE] org.geotools.data.arcsde.ArcSDEConnectionPool - com.esri.sde.sdk.client.SeConnection@fba502freed, after release used is: []
available is [com.esri.sde.sdk.client.SeConnection@45aa2c, com.esri.sde.sdk.client.SeConnection@fba502]
1449560 [INFO] org.vfny.geoserver.wms.responses.map.kml.EncodeKML - process failed: Problem with feature reader: Error building SeFilter
1449561 [FINE] org.vfny.geoserver.wms.responses.GetMapResponse - asking delegate for aborting the process
1449561 [FINE] org.vfny.geoserver.wms.responses.map.kml.KMLMapProducer - aborting KML map response
1449562 [INFO] org.vfny.geoserver.wms.responses.map.kml.KMLMapProducer - aborting KML encoder
1449566 [INFO] org.vfny.geoserver.servlets.AbstractService - Had an undefined error: Problem with feature reader: Error building SeFilter
org.vfny.geoserver.wms.WmsException: Problem with feature reader: Error building SeFilter
at org.vfny.geoserver.wms.WmsExceptionHandler.newServiceException(WmsExceptionHandler.java:64)
at org.vfny.geoserver.servlets.AbstractService.sendError(AbstractService.java:749)
at org.vfny.geoserver.servlets.AbstractService.doService(AbstractService.java:521)
at org.vfny.geoserver.servlets.AbstractService.doGet(AbstractService.java:276)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.vfny.geoserver.wms.servlets.WmsDispatcher.doResponse(WmsDispatcher.java:156)
at org.vfny.geoserver.wms.servlets.WmsDispatcher.doGet(WmsDispatcher.java:115)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:342)
at org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:122)
at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:334)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:286)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
at org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:961)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:197)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:276)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:511)
Caused by: org.geotools.data.DataSourceException: Problem with feature reader: Error building SeFilter
at org.geotools.data.arcsde.ArcSDEDataStore.getFeatureReader(ArcSDEDataStore.java:598)
at org.geotools.data.arcsde.ArcSDEDataStore.getFeatureReader(ArcSDEDataStore.java:612)
at org.geotools.data.DefaultFeatureResults.reader(DefaultFeatureResults.java:147)
at org.vfny.geoserver.wms.responses.map.kml.EncodeKML.writeLayers(EncodeKML.java:318)
at org.vfny.geoserver.wms.responses.map.kml.EncodeKML.encodeKML(EncodeKML.java:128)
at org.vfny.geoserver.wms.responses.map.kml.KMLMapProducer.writeTo(KMLMapProducer.java:93)
at org.vfny.geoserver.wms.responses.GetMapResponse.writeTo(GetMapResponse.java:224)
at org.vfny.geoserver.servlets.AbstractService.doService(AbstractService.java:510)
... 23 more
Caused by: java.lang.RuntimeException: Error building SeFilter
at org.geotools.filter.GeometryEncoderSDE.visit(GeometryEncoderSDE.java:214)
at org.geotools.filter.GeometryFilterImpl.accept(GeometryFilterImpl.java:354)
at org.geotools.filter.GeometryEncoderSDE.encode(GeometryEncoderSDE.java:148)
at org.geotools.data.arcsde.ArcSDEQuery$FilterSet.getSpatialFilters(ArcSDEQuery.java:988)
at org.geotools.data.arcsde.ArcSDEQuery.createSeQueryForFetch(ArcSDEQuery.java:321)
at org.geotools.data.arcsde.ArcSDEQuery.getSeQuery(ArcSDEQuery.java:271)
at org.geotools.data.arcsde.ArcSDEQuery.execute(ArcSDEQuery.java:643)
at org.geotools.data.arcsde.ArcSDEDataStore.getFeatureReader(ArcSDEDataStore.java:567)
... 30 more
Caused by: java.lang.ClassCastException
at org.geotools.filter.GeometryEncoderSDE.addSpatialFilter(GeometryEncoderSDE.java:242)
at org.geotools.filter.GeometryEncoderSDE.visit(GeometryEncoderSDE.java:190)
... 37 more
1471509 [FINE] org.vfny.geoserver.util.requests.readers.KvpRequestReader - clean request is bbox=-130,24,-66,50&request=GetMap&layers=glc:GLC.WATERSHEDS&width=400&height=400&srs=EPSG:4326&styles=green&format=application/vnd.google-earth.kml xml
1471510 [FINE] org.vfny.geoserver.util.requests.readers.KvpRequestReader - returning parsed

{SRS=EPSG:4326, LAYERS=glc:GLC.WATERSHEDS, BBOX=-130,24,-66,50, HEIGHT=400, REQUEST=GetMap, STYLES=green, WIDTH=400, FORMAT=application/vnd.google-earth.kml xml}

1471510 [INFO] org.vfny.geoserver.servlets.AbstractService - Looking for configured service responses' strategy
1471510 [INFO] org.vfny.geoserver.servlets.AbstractService - Looking for configured service strategy PARTIAL-BUFFER
1471511 [FINE] org.vfny.geoserver.servlets.AbstractService - verifying configured strategy
1471511 [INFO] org.vfny.geoserver.servlets.AbstractService - Using service strategy class org.vfny.geoserver.servlets.PartialBufferStrategy
1471512 [INFO] org.vfny.geoserver.servlets.AbstractService - Set buffer size to 50
1471512 [FINE] org.vfny.geoserver.servlets.AbstractService - reading request: bbox=-130,24,-66,50&request=GetMap&layers=glc:GLC.WATERSHEDS&width=400&height=400&srs=EPSG:4326&styles=green&format=application/vnd.google-earth.kml+xml
1471513 [FINE] org.vfny.geoserver.global.Data - getting type glc:GLC.WATERSHEDS
1471514 [FINE] org.geotools.styling.StyleImpl - number of fts set 1
1471515 [FINE] org.vfny.geoserver.wms.requests.GetMapKvpReader - establishing green style for glc:GLC.WATERSHEDS
1471517 [INFO] org.vfny.geoserver.servlets.AbstractService - handling request: org.vfny.geoserver.wms.requests.GetMapRequest@8845df8b
1471517 [FINE] org.vfny.geoserver.servlets.AbstractService - strategy is: org.vfny.geoserver.servlets.FileStrategy@1a8123b
1471520 [FINE] org.vfny.geoserver.wms.responses.GetMapResponse - setting up map
1471537 [FINE] org.vfny.geoserver.servlets.AbstractService - mime type is: application/vnd.google-earth.kml+xml
1471539 [FINE] org.geotools.data.arcsde.ArcSDEQuery - Creating new ArcSDEQuery
1471539 [FINE] org.geotools.data.arcsde.ArcSDEConnectionPool - com.esri.sde.sdk.client.SeConnection@45aa2c now in use
1471540 [FINE] org.geotools.data.arcsde.ArcSDEQuery - constructing new sql query with connection: com.esri.sde.sdk.client.SeConnection@45aa2c, propnames: [OBJECTID, AREA, PERIMETER, UNITNAME, LAKEBASIN, SUBDIV, SUBSUBDIV, SUBDIVNAME, NOMSUBDIV, HUC, BASIN, REGION, SUBREGION, ACCTUNIT, HYDROUNIT, SHAPE] sqlConstruct: com.esri.sde.sdk.client.SeSqlConstruct@861a09
1471541 [SEVERE] org.geotools.data.arcsde.ArcSDEDataStore - Error building SeFilter
1471542 [FINE] org.geotools.data.arcsde.ArcSDEConnectionPool - trying to release a seconnection: com.esri.sde.sdk.client.SeConnection@45aa2c
1471542 [FINE] org.geotools.data.arcsde.ArcSDEConnectionPool - com.esri.sde.sdk.client.SeConnection@45aa2cfreed, after release used is: []
available is [com.esri.sde.sdk.client.SeConnection@fba502, com.esri.sde.sdk.client.SeConnection@45aa2c]
1471543 [INFO] org.vfny.geoserver.wms.responses.map.kml.EncodeKML - process failed: Problem with feature reader: Error building SeFilter
1471543 [FINE] org.vfny.geoserver.wms.responses.GetMapResponse - asking delegate for aborting the process
1471544 [FINE] org.vfny.geoserver.wms.responses.map.kml.KMLMapProducer - aborting KML map response
1471544 [INFO] org.vfny.geoserver.wms.responses.map.kml.KMLMapProducer - aborting KML encoder
1471549 [INFO] org.vfny.geoserver.servlets.AbstractService - Had an undefined error: Problem with feature reader: Error building SeFilter
org.vfny.geoserver.wms.WmsException: Problem with feature reader: Error building SeFilter
at org.vfny.geoserver.wms.WmsExceptionHandler.newServiceException(WmsExceptionHandler.java:64)
at org.vfny.geoserver.servlets.AbstractService.sendError(AbstractService.java:749)
at org.vfny.geoserver.servlets.AbstractService.doService(AbstractService.java:521)
at org.vfny.geoserver.servlets.AbstractService.doGet(AbstractService.java:276)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.vfny.geoserver.wms.servlets.WmsDispatcher.doResponse(WmsDispatcher.java:156)
at org.vfny.geoserver.wms.servlets.WmsDispatcher.doGet(WmsDispatcher.java:115)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:342)
at org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:122)
at org.mortbay.jetty.servlet.WebApplicationHandler$Chain.doFilter(WebApplicationHandler.java:334)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:286)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
at org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:790)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:961)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:807)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:197)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:276)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:511)
Caused by: org.geotools.data.DataSourceException: Problem with feature reader: Error building SeFilter
at org.geotools.data.arcsde.ArcSDEDataStore.getFeatureReader(ArcSDEDataStore.java:598)
at org.geotools.data.arcsde.ArcSDEDataStore.getFeatureReader(ArcSDEDataStore.java:612)
at org.geotools.data.DefaultFeatureResults.reader(DefaultFeatureResults.java:147)
at org.vfny.geoserver.wms.responses.map.kml.EncodeKML.writeLayers(EncodeKML.java:318)
at org.vfny.geoserver.wms.responses.map.kml.EncodeKML.encodeKML(EncodeKML.java:128)
at org.vfny.geoserver.wms.responses.map.kml.KMLMapProducer.writeTo(KMLMapProducer.java:93)
at org.vfny.geoserver.wms.responses.GetMapResponse.writeTo(GetMapResponse.java:224)
at org.vfny.geoserver.servlets.AbstractService.doService(AbstractService.java:510)
... 23 more
Caused by: java.lang.RuntimeException: Error building SeFilter
at org.geotools.filter.GeometryEncoderSDE.visit(GeometryEncoderSDE.java:214)
at org.geotools.filter.GeometryFilterImpl.accept(GeometryFilterImpl.java:354)
at org.geotools.filter.GeometryEncoderSDE.encode(GeometryEncoderSDE.java:148)
at org.geotools.data.arcsde.ArcSDEQuery$FilterSet.getSpatialFilters(ArcSDEQuery.java:988)
at org.geotools.data.arcsde.ArcSDEQuery.createSeQueryForFetch(ArcSDEQuery.java:321)
at org.geotools.data.arcsde.ArcSDEQuery.getSeQuery(ArcSDEQuery.java:271)
at org.geotools.data.arcsde.ArcSDEQuery.execute(ArcSDEQuery.java:643)
at org.geotools.data.arcsde.ArcSDEDataStore.getFeatureReader(ArcSDEDataStore.java:567)
... 30 more
Caused by: java.lang.ClassCastException
at org.geotools.filter.GeometryEncoderSDE.addSpatialFilter(GeometryEncoderSDE.java:242)
at org.geotools.filter.GeometryEncoderSDE.visit(GeometryEncoderSDE.java:190)
... 37 more