Bug 343688

Comment 1 Stephan Herrmann 2011-04-23 12:48:28 EDT

Given you see an exception there should be a corresponding entry in
the log file .metadata/.log inside your workspace directory.

If you paste or attach the exception stack trace to this bug we have better
chances of finding out which plug-in is actually causing grief.

Comment 2 Olivier Thomann 2011-04-25 09:32:39 EDT

Stack trace is mandatory for further investigation.

Comment 3 Tibor Budai 2011-05-02 09:56:46 EDT

Created attachment 194487 [details]
requested log file

Comment 4 Ronny Bergersten 2011-05-02 10:06:07 EDT

Created attachment 194488 [details]
" "Activity Monitor Job"."

Comment 5 Ronny Bergersten 2011-05-02 10:07:19 EDT

I have exactly the same problem. That error message jumps up all the time.

Comment 6 Olivier Thomann 2011-05-02 10:09:34 EDT

Moving to Mylyn.

Comment 7 Hugh Hefner 2011-05-02 10:09:58 EDT

I got this one too,   eclipse for java developers, build-number,  20110218-0911

!ENTRY org.eclipse.core.jobs 4 2 2011-05-02 16:04:21.361
!MESSAGE An internal error occurred during: "Activity Monitor Job".
!STACK 0
java.lang.NullPointerException
	at org.eclipse.mylyn.internal.tasks.ui.TaskListSynchronizationScheduler.cancel(TaskListSynchronizationScheduler.java:107)
	at org.eclipse.mylyn.internal.tasks.ui.TaskListSynchronizationScheduler.userAttentionGained(TaskListSynchronizationScheduler.java:155)
	at org.eclipse.mylyn.internal.monitor.ui.ActivityContextManager.fireActive(ActivityContextManager.java:222)
	at org.eclipse.mylyn.internal.monitor.ui.ActivityContextManager.access$2(ActivityContextManager.java:220)
	at org.eclipse.mylyn.internal.monitor.ui.ActivityContextManager$2.active(ActivityContextManager.java:92)
	at org.eclipse.mylyn.internal.monitor.ui.CheckActivityJob.run(CheckActivityJob.java:101)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Comment 8 Steffen Pingel 2011-05-09 15:37:59 EDT

Thanks for the stack trace. We'll look into this. On which operating systems are you experiencing this problem?

Comment 9 Missing name 2011-05-09 19:41:58 EDT

(In reply to comment #8)
> Thanks for the stack trace. We'll look into this. On which operating systems
> are you experiencing this problem?

I'm on Mac OS X 10.6.3 (10D573)

Eclipse Version: Helios Service Release 2, Build id: 20110301-1815

- KFM

Comment 10 Steffen Pingel 2011-05-10 04:24:21 EDT

As  work-around, can you try the following:

* Disable "Synchronize Automatically" in the view menu of the task list.

Alternatively, if you are not using Mylyn:

* Close the Task List view so it is not visible on startup
* Under Preferences > General > Startup and Shutdown disable Mylyn Team UI and Mylyn Tasks UI

Does that get rid of the error popups?

Comment 11 joe 2011-05-11 17:03:51 EDT

Same error. Keeps popping up every few minutes.

Version: 3.6.2.r362_v20110210
Build id: M20110210-1200

Comment 12 Costis 2011-05-12 07:06:55 EDT

(In reply to comment #10)
> As  work-around, can you try the following:
> 
> * Disable "Synchronize Automatically" in the view menu of the task list.
> 
> Alternatively, if you are not using Mylyn:
> 
> * Close the Task List view so it is not visible on startup
> * Under Preferences > General > Startup and Shutdown disable Mylyn Team UI and
> Mylyn Tasks UI
> 
> Does that get rid of the error popups?

The first step did the trick for my Eclipse 

Version: Helios Service Release 2
Build id: 20110218-0911

Comment 13 Missing name 2011-05-12 19:03:35 EDT

(In reply to comment #10)
> As  work-around, can you try the following:
> 
> * Disable "Synchronize Automatically" in the view menu of the task list.
> 
> Alternatively, if you are not using Mylyn:
> 
> * Close the Task List view so it is not visible on startup
> * Under Preferences > General > Startup and Shutdown disable Mylyn Team UI and
> Mylyn Tasks UI
> 
> Does that get rid of the error popups?

Disabling the "Synchronize Automatically" menu item corrected the issue for me as well.

Thank you!

- KFM

Comment 14 Steffen Pingel 2011-06-01 22:02:33 EDT

Created attachment 197208 [details]
fix

Comment 15 Steffen Pingel 2011-06-01 22:02:36 EDT

Created attachment 197209 [details]
mylyn/context/zip

Comment 16 Steffen Pingel 2011-06-01 22:05:24 EDT

I have committed the fix and triggered a new weekly build https://hudson.eclipse.org/hudson/job/mylyn-release/116/ which will be available from this site shortly: http://download.eclipse.org/mylyn/snapshots/weekly . This fix will also be included in Indigo RC4.