id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,external_id 2548,Selection not cleared server-side,gBecker,,"When using the AjaxViewer and trying to clear a selection then this selection is not cleared server-side. This is related to MGOS 2.6 and the preview release of MGOS 3.0. Steps to reproduce the Problem: 1. Preview an existing MapDefinition with Maestro[[BR]] 2. Select a feature[[BR]] 3. Deselect the feature via toolbar or context menu[[BR]] 4. Go to the ""MapAgent Test Pages""[[BR]] 5. Under ""Rendering"" service perform a ""MAPIMAGE""-Request of the area where you formerly selected the feature.[[BR]] 6. The selection is rendering with the map Image.[[BR]] I turned on the browsers network analysis and detected a ""silent"" error when you are deselecting features. The request that should probably clear the selection returns a 559 http-error: Request to mapagent.fcgi (POST): {{{ OPERATION=QUERYMAPFEATURES&VERSION=2.6.0&PERSIST=1&MAXFEATURES=-1&MAPNAME=da766655-a6f1-4981-916f-356b5e605b9f&SESSION=44ec47c2-c636-11e4-8000-a0d3c14fb893_en_MTI3LjAuMC4x0B600B5F0B5E&SEQ=0.5484117435160211&CLIENTAGENT=Ajax%20Viewer&LAYERATTRIBUTEFILTER=0&REQUESTDATA=8&FEATUREFILTER= }}} return this error: {{{ Argument is null. - MgRenderingServiceHandler.ProcessOperation() line 83 file c:\working\build_area\mapguide\2.6.0\x64\mgdev\server\src\services\rendering\RenderingServiceHandler.cpp - MgOpQueryFeatures.Execute() line 125 file c:\working\build_area\mapguide\2.6.0\x64\mgdev\server\src\services\rendering\OpQueryFeatures.cpp - MgServerRenderingService.QueryFeatures() line 853 file c:\working\build_area\mapguide\2.6.0\x64\mgdev\server\src\services\rendering\ServerRenderingService.cpp - MgServerRenderingService.RenderForSelection() line 1187 file c:\working\build_area\mapguide\2.6.0\x64\mgdev\server\src\services\rendering\ServerRenderingService.cpp }}} ",defect,closed,high,,General,2.6.0,critical,fixed,,,