sono alle prime esperienze con java, e realizzando il programma sono incappato in questo errore che non riesco a risolvere; qualcuno può dirmi come risolverlo? Vi prego!

SESSION 2011-01-25 20:35:44.128 ----------------------------------------------
log4j:WARN No appenders could be found for logger (org.talend.core.CorePlugin).
log4j:WARN Please initialize the log4j system properly.

- 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\Desktop\4_0_3tos/../ComponentDesigner_runtime -dev file:C:/Users/Desktop/4_0_3tos/.metadata/.plugins/org.eclipse.pde.core/ComponentDesigner_runtime/dev.properties -os win32 -ws win32 -arch x86 !ENTRY org.eclipse.osgi 4 0 2011-01-25 20:35:46.189 !MESSAGE Application error !STACK 1 java.lang.RuntimeException: The service org.talend.core.model.migration.IMigrationToolServ ice has not been registered. at org.talend.core.GlobalServiceRegister.getService(G lobalServiceRegister.java:60) at org.talend.rcp.intro.Application.start(Application .java:57) at org.eclipse.equinox.internal.app.EclipseAppHandle. run(EclipseAppHandle.java:194) at org.eclipse.core.runtime.internal.adaptor.EclipseA ppLauncher.runApplication(EclipseAppLauncher.java: 110) at org.eclipse.core.runtime.internal.adaptor.EclipseA ppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.ru n(EclipseStarter.java:368) at org.eclipse.core.runtime.adaptor.EclipseStarter.ru n(EclipseStarter.java:179) at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.eclipse.equinox.launcher.Main.invokeFramework( Main.java:559) at org.eclipse.equinox.launcher.Main.basicRun(Main.ja va:514) at org.eclipse.equinox.launcher.Main.run(Main.java:13 11) at org.eclipse.equinox.launcher.Main.main(Main.java:1 287)