how can I fix this error?thanks in advance best regards. I attach the log file

eclipse.buildId=unknown
java.version=1.6.0_23
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=it_IT
Framework arguments:  -product org.talend.rcp.branding.tos.product
Command-line arguments:  -product org.talend.rcp.branding.tos.product -data C:\Users\lucyliu\Desktop\4_0_3tos/../runtime-DC -dev file:C:/Users/lucyliu/Desktop/4_0_3tos/.metadata/.plugins/org.eclipse.pde.core/DC/dev.properties -os win32 -ws win32 -arch x86 -consoleLog

Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".

java.lang.RuntimeException: The service org.talend.designer.business.diagram.custom.IDiagramModelService has not been registered.
at org.talend.core.GlobalServiceRegister.getService(GlobalServiceRegister.java:54)
at org.talend.core.CorePlugin.getDiagramModelService(CorePlugin.java:162)
at org.talend.designer.core.ui.ActiveProcessTracker.partOpened(ActiveProcessTracker.java:243)
at org.eclipse.ui.internal.PartListenerList$5.run(PartListenerList.java:132)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.runtime.Platform.run(Platform.java:888)
at org.eclipse.ui.internal.PartListenerList.fireEvent(PartListenerList.java:57)
at org.eclipse.ui.internal.PartListenerList.firePartOpened(PartListenerList.java:130)
at org.eclipse.ui.internal.PartService.firePartOpened(PartService.java:276)
at org.eclipse.ui.internal.WWinPartService$WWinListener.partOpened(WWinPartService.java:54)
at org.eclipse.ui.internal.PartListenerList2$5.run(PartListenerList2.java:130)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.runtime.Platform.run(Platform.java:888)
at org.eclipse.ui.internal.PartListenerList2.fireEvent(PartListenerList2.java:55)