Client Error
Details:

Error: Error: Operation "set" on target "w247" of type "null" failed:
objectEntry is undefined
Properties: 
bounds = 0,0,1906,249
children = 
tabIndex = 26


  Script: {"head":{"requestCounter":16},"operations":[["destroy","w215"],["set","w2",{"active":true}],["set","w209",{"enabled":true}],["set","w20",{"text":""}],["set","w33",{"children":["w244","w243","w77","w76","w60","w59","w34","w47","w64","w197"]}],["create","w244","rwt.widgets.ToolBar",{"parent":"w33","style":["FLAT","HORIZONTAL"],"bounds":[0,0,0,0],"children":[],"tabIndex":-1,"visibility":false}],["listen","w244",{"Activate":true,"MouseDown":true,"MouseUp":true,"MouseDoubleClick":true}],["create","w243","rwt.widgets.Composite",{"parent":"w33","style":["NONE"],"bounds":[3,674,1906,249],"children":["w245"],"tabIndex":-1}],["listen","w243",{"Activate":true}],["set","w243",{"clientArea":[0,0,1906,249]}],["create","w245","rwt.widgets.Composite",{"parent":"w243","style":["NONE"],"bounds":[0,0,1906,249],"children":["w246"],"tabIndex":-1,"clientArea":[0,0,1906,249]}],["create","w246","rwt.widgets.Composite",{"parent":"w245","style":["NONE"],"bounds":[0,0,1906,249],"children":["w247"],"tabIndex":-1,"clientArea":[0,0,1906,249]}],["set","w247",{"bounds":[0,0,1906,249],"children":[],"tabIndex":26}],["set","w76",{"visibility":false}],["set","w80",{"tabIndex":-1}],["set","w64",{"selection":"w248","selectionBackground":[76,166,210,255],"selectionForeground":[0,0,0,255],"selectionBackgroundGradient":[[[210,232,243,255],[76,166,210,255]],[0,75],true]}],["set","w75",{"bounds":[0,0,78,23]}],["create","w248","rwt.widgets.CTabItem",{"parent":"w64","index":1,"style":["CLOSE"],"bounds":[78,0,159,23],"text":"VisualizationView","image":["rwt-resources/generated/15dcb52e.gif",16,16],"showClose":true}],["set","w65",{"bounds":[237,1,1671,22],"clientArea":[0,0,1671,22]}],["set","w1",{"focusControl":"w2","activeKeys":["ALT+#39","CTRL+#45","CTRL+SHIFT+#106","ALT+#34","SHIFT+#45","CTRL+#69","CTRL+#32","ALT+#37","CTRL+#117","CTRL+#77","#123","CTRL+#121","ALT+-","CTRL+,","CTRL+.","CTRL+#78","CTRL+#87","CTRL+#115","CTRL+SHIFT+#87","CTRL+SHIFT+#119","CTRL+SHIFT+#111","ALT+#118","ALT+SHIFT+#118","CTRL+#119","CTRL+SHIFT+#118","CTRL+#118","CTRL+SHIFT+#117","CTRL+#89","CTRL+#90","ALT+#13","CTRL+#80","#113","CTRL+SHIFT+#83","CTRL+#83","CTRL+SHIFT+#115","SHIFT+#46","CTRL+#70","CTRL+SHIFT+#69","CTRL+SHIFT+#32","ALT+#33"],"cancelKeys":["ALT+#39","CTRL+#45","CTRL+SHIFT+#106","ALT+#34","SHIFT+#45","CTRL+#69","CTRL+#32","ALT+#37","CTRL+#117","CTRL+#77","#123","CTRL+#121","ALT+-","CTRL+,","CTRL+.","CTRL+#78","CTRL+#87","CTRL+#115","CTRL+SHIFT+#87","CTRL+SHIFT+#119","CTRL+SHIFT+#111","ALT+#118","ALT+SHIFT+#118","CTRL+#119","CTRL+SHIFT+#118","CTRL+#118","CTRL+SHIFT+#117","CTRL+#89","CTRL+#90","ALT+#13","CTRL+#80","#113","CTRL+SHIFT+#83","CTRL+#83","CTRL+SHIFT+#115","SHIFT+#46","CTRL+#70","CTRL+SHIFT+#69","CTRL+SHIFT+#32","ALT+#33"]}],["call","rwt.client.TextSizeMeasurement","measureItems",{"items":[["t1712806109","V",["Verdana","Lucida Sans","Arial","Helvetica","sans-serif"],12,false,false,-1,false]]}]]}
  Stack: rwt.remote.MessageProcessor._processError@htttp: //1 27.0.0 1 : 10080/rwt-resources/rap-client.js:71172:5
rwt.remote.MessageProcessor.processOperationArray@htttp: //1 27.0.0 1 : 10080/rwt-resources/rap-client.js:71014:7
rwt.remote.MessageProcessor.processMessage@htttp: //1 27.0.0 1 : 10080/rwt-resources/rap-client.js:70967:7
.members._handleSuccess@htttp: //1 27.0.0 1 : 10080/rwt-resources/rap-client.js:71646:9
rwt.remote.Request.prototype.setSuccessHandler/this._success@htttp: //1 27.0.0 1 : 10080/rwt-resources/rap-client.js:36706:35
rwt.remote.Request.prototype._onReadyStateChange@htttp: //1 27.0.0 1 : 10080/rwt-resources/rap-client.js:36757:13
.statics.bind/wrap@htttp: //1 27.0.0 1 : 10080/rwt-resources/rap-client.js:5739:1

  Debug: on
  Request: {"head":{"requestCounter":15},"operations":[["notify","w224","DefaultSelection",{"item":"w242","detail":null,"shiftKey":false,"ctrlKey":false,"altKey":false}],["notify","w224","MouseDown",{"button":1,"x":928,"y":504,"time":11498,"shiftKey":false,"ctrlKey":false,"altKey":false}],["notify","w224","MouseDoubleClick",{"button":1,"x":928,"y":504,"time":11498,"shiftKey":false,"ctrlKey":false,"altKey":false}],["notify","w224","MouseUp",{"button":1,"x":928,"y":504,"time":11558,"shiftKey":false,"ctrlKey":false,"altKey":false}],["set","w1",{"cursorLocation":[928,504]}]]}