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[mylyn-dev] Re: Problem with Mylyn 2.3.2 and Eclipse 3.4RC2

Forwarding from newsgroup in case anyone else encounters a similar problem. 
--------------

Andreas:

It looks like your Mylyn was partially updated, either due to a network
problem or an install/p2 problem.  Could you please file a bug against Mylyn
with this stack trace and let us know how up updated/installed?

In the meantime, if you have any more problems with the 3.0 RCs please do
the following: 

1) Uninstall or delete the old plug-ins.  Make sure you leave the
<workspace>/.mylyn directory around since it holds the snapshots.

2) Install Mylyn 2.3.x from: http://www.eclipse.org/mylyn/downloads/

3) Restore tasks from a backup if they disappeared, via the Task List's view
menu.

Mik

Andreas Chlache wrote:
> I went back to m7.
> First Mylyn cannot create its TaskView - ERROR.
> 
> !ENTRY org.eclipse.ui.workbench 4 0 2008-05-29 16:06:36.703
> !MESSAGE Unable to create view ID 
> org.eclipse.mylyn.tasks.ui.views.tasks: An unexpected exception was
thrown.
> !STACK 0
> java.lang.NullPointerException
>     at 
>
org.eclipse.mylyn.tasks.core.AbstractTaskContainer.getChildren(AbstractTaskC
ontainer.java:75) 
> 
>     at 
>
org.eclipse.mylyn.internal.tasks.ui.views.TaskListContentProvider.getFiltere
dRootChildren(TaskListContentProvider.java:191) 
> 
>     at 
>
org.eclipse.mylyn.internal.tasks.ui.views.TaskListContentProvider.getFiltere
dChildrenFor(TaskListContentProvider.java:173) 
> 
>     at 
>
org.eclipse.mylyn.internal.tasks.ui.views.TaskListContentProvider.getChildre
n(TaskListContentProvider.java:82) 
> 
>     at 
>
org.eclipse.mylyn.internal.tasks.ui.views.TaskListContentProvider.hasChildre
n(TaskListContentProvider.java:89) 
> 
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer
.java:2076) 
> 
>     at 
> org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer.java:581)
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer
.java:2102) 
> 
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(AbstractTreeViewer.j
ava:2752) 
> 
>     at
org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.java:841)
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeView
er.java:828) 
> 
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:8
02) 
> 
>     at 
> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeView
er.java:776) 
> 
>     at 
> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:633)
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(Abstract
TreeViewer.java:1490) 
> 
>     at 
>
org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(TreeViewer.java:
822) 
> 
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:1
474) 
> 
>     at 
>
org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredVie
wer.java:1365) 
> 
>     at 
>
org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:396
) 
> 
>     at 
>
org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredVie
wer.java:1328) 
> 
>     at 
>
org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer
.java:1467) 
> 
>     at 
>
org.eclipse.ui.dialogs.FilteredTree$NotifyingTreeViewer.inputChanged(Filtere
dTree.java:905) 
> 
>     at 
> org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:251)
>     at 
>
org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:16
03) 
> 
>     at 
>
org.eclipse.mylyn.internal.tasks.ui.views.TaskListView.createPartControl(Tas
kListView.java:779) 
> 
>     at 
>
org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:37
1) 
> 
>     at 
> org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:230)
>     at 
>
org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReferenc
e.java:594) 
> 
>     at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:300)
>     at org.eclipse.ui.internal.ViewPane.setVisible(ViewPane.java:531)
>     at 
>
org.eclipse.ui.internal.presentations.PresentablePart.setVisible(Presentable
Part.java:180) 
> 
>     at 
>
org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(Pres
entablePartFolder.java:270) 
> 
>     at 
>
org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftTo
RightTabOrder.java:65) 
> 
>     at 
>
org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPar
t(TabbedStackPresentation.java:473) 
> 
>     at 
>
org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.jav
a:1256) 
> 
>     at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:668)
>     at org.eclipse.ui.internal.PartStack.createControl(PartStack.java:576)
>     at 
>
org.eclipse.ui.internal.PartSashContainer.createControl(PartSashContainer.ja
va:568) 
> 
>     at 
>
org.eclipse.ui.internal.PerspectiveHelper.activate(PerspectiveHelper.java:27
1) 
> 
>     at
org.eclipse.ui.internal.Perspective.onActivate(Perspective.java:964)
>     at 
> org.eclipse.ui.internal.WorkbenchPage.onActivate(WorkbenchPage.java:2557)
>     at 
> org.eclipse.ui.internal.WorkbenchWindow$25.run(WorkbenchWindow.java:2862)
>     at 
> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
>     at 
>
org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow.java:2
843) 
> 
>     at 
>
org.eclipse.ui.internal.WorkbenchWindow$19.runWithException(WorkbenchWindow.
java:2160) 
> 
>     at 
>
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreadin
g.java:31) 
> 
>     at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
>     at 
>
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)

> 
>     at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3759)
>     at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3384)
>     at 
>
org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.jav
a:803) 
> 
>     at 
> org.eclipse.ui.internal.Workbench$27.runWithException(Workbench.java:1365)
>     at 
>
org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreadin
g.java:31) 
> 
>     at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
>     at 
>
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:132)

> 
>     at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3759)
>     at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3384)
>     at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2305)
>     at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2210)
>     at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:494)
>     at 
>
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)

> 
>     at 
>
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:489)
>     at
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
>     at 
>
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.
java:112) 
> 
>     at 
>
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:
193) 
> 
>     at 
>
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(
EclipseAppLauncher.java:110) 
> 
>     at 
>
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAp
pLauncher.java:79) 
> 
>     at 
>
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:379)

> 
>     at 
>
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)

> 
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>     at java.lang.reflect.Method.invoke(Unknown Source)
>     at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
>     at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
>     at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
> 
> I need to delete the .mylyn directory of the workspace.
> Taskview shows up without errors.
> Restore from Backup. Task Data are restored almost right.
> One task is empty.
> 
> Andreas Chlache wrote:
>> After updating from m7 to rc2 i got into an incredible mess.
>> First I ran into one crash(most likely due to Mylyn) after another 
>> reading my workspace.
>> Now it finally works but Mylyn cannot read its own backup data properly.
>> I guess thats the worst thing a software can do - not be able to read 
>> your own backup data.
>> All categories are empty. Everything is now put into uncategorized. 
>> Dozens of tasks.
>> Some tasks seems to be empty.
>>
>> Mylyn seems to get more and more buggy. One time - after switching 
>> tasks - all editors gone
>> next time nothing changes at all - the editors stay the same.
>>
>> And the newest thing: two tasks stay active all the time. I cannot 
>> turn the old task off.
>>
>> Sorry I did not file a bug report. I am pissed and too busy and I lost 
>> my account data too.
>>
>>




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