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[mylar-dev] Could not restore offline repository tasks file - connector core class not found

I am writing connector for CodeBeamer and when I create CodeBeamer repository task, exit Eclipse and restart it I am getting error (info):

Could not restore offline repository tasks file, creating new one, likely cause is format update.

Cased by class not found java.lang.ClassNotFoundException: org.eclipse.mylar.internal.codebeamer.core.CodeBeamerTaskData

The class is part of the connector core plugin and the path org.eclipse.mylar.internal.codebeamer.core is exported.
It fails in org.eclipse.mylar.internal.tasks.core.TaskDataManager.readOfflineData()

Anybody has an idea why on offline report loading the connector classes are not found, but they are found later on (connector works).

Stack trace:

java.lang.ClassNotFoundException: org.eclipse.mylar.internal.codebeamer.core.CodeBeamerTaskData
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:402)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass (ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at java.io.ObjectInputStream.resolveClass (ObjectInputStream.java:585)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1544)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466)
at java.io.ObjectInputStream.readOrdinaryObject (ObjectInputStream.java:1699)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at java.util.HashMap.readObject(HashMap.java :1067)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java :25)
at java.lang.reflect.Method.invoke(Method.java:585)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:946)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1809)
at java.io.ObjectInputStream.readOrdinaryObject (ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData (ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject (ObjectInputStream.java:348)
at org.eclipse.mylar.internal.tasks.core.TaskDataManager.readOfflineData(TaskDataManager.java:214)
at org.eclipse.mylar.internal.tasks.core.TaskDataManager.<init>(TaskDataManager.java :57)
at org.eclipse.mylar.tasks.ui.TasksUiPlugin.readOfflineReports(TasksUiPlugin.java:705)
at org.eclipse.mylar.tasks.ui.TasksUiPlugin.start(TasksUiPlugin.java:388)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run (BundleContextImpl.java:999)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:993)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start (BundleContextImpl.java:974)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.preFindLocalClass (EclipseLazyStarter.java:86)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:410)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java :189)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:334)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:386)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass (BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass (BundleLoader.java:278)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleHost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(AbstractBundle.java:1245)
at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension (RegistryStrategyOSGI.java:160)
at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:787)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension (ConfigurationElement.java:243)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:51)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java :242)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlugin.java:238)
at org.eclipse.ui.internal.registry.ViewDescriptor.createView (ViewDescriptor.java:69)
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:292)
at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:197)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart (WorkbenchPartReference.java:566)
at org.eclipse.ui.internal.WorkbenchPage$ActivationList.setActive(WorkbenchPage.java:3881)
at org.eclipse.ui.internal.WorkbenchPage.restoreState(WorkbenchPage.java:2905)
at org.eclipse.ui.internal.WorkbenchWindow.restoreState (WorkbenchWindow.java:1933)
at org.eclipse.ui.internal.Workbench.doRestoreState(Workbench.java:2867)
at org.eclipse.ui.internal.Workbench.access$14(Workbench.java:2815)
at org.eclipse.ui.internal.Workbench$19.run (Workbench.java:1691)
at org.eclipse.ui.internal.Workbench.runStartupWithProgress(Workbench.java:1431)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1689)
at org.eclipse.ui.internal.Workbench.access$12 (Workbench.java:1660)
at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1539)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java :1483)
at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchConfigurer.java:183)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:702)
at org.eclipse.ui.internal.Workbench.init (Workbench.java:1094)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1857)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:419)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench (PlatformUI.java:149)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication (EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:74)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:348)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run (EclipseStarter.java:165)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:341)
at org.eclipse.core.launcher.Main.basicRun(Main.java:285)
at org.eclipse.core.launcher.Main.run(Main.java:987)
at org.eclipse.core.launcher.Main.main(Main.java:962)


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