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HI,I had get this error to.

And this is the log file . Is there any method to fix it?thanks.

!ENTRY org.eclipse.ui 4 4 2009-09-25 12:32:13.878
!MESSAGE "Content Assist" did not complete normally.  Please see the log for more information.

!ENTRY org.eclipse.ui 4 0 2009-09-25 12:32:13.878
!MESSAGE java.lang.NullPointerException
!STACK 0
java.lang.NullPointerException
    at com.adobe.flexbuilder.codemodel.internal.asdoc.ClassCommentRef.<init> (ClassCommentRef.java:36)
    at com.adobe.flexbuilder.codemodel.internal.tree.ClassNode.getDynamicCom mentRef(ClassNode.java:698)
    at com.adobe.flexbuilder.codemodel.internal.tree.BaseDefinitionNode.getC omment(BaseDefinitionNode.java:273)
    at com.adobe.flexide.as.core.contentassist.ActionScriptCompletionProposa l.<init>(ActionScriptCompletionProposal.java:145)
    at com.adobe.flexide.as.core.contentassist.ActionScriptCompletionProcess or.getTypeProposal(ActionScriptCompletionProcessor.java:654)
    at com.adobe.flexide.as.core.contentassist.ActionScriptCompletionProcess or.createProposalsFromDefinitions(ActionScriptCompletionProcessor.java :903)
    at com.adobe.flexbuilder.dcrad.core.DCRADContentAssistProcessor.createPr oposalsFromDefinitions(DCRADContentAssistProcessor.java:131)
    at com.adobe.flexide.as.core.contentassist.ActionScriptCompletionProcess or.createLocalVariableProposals(ActionScriptCompletionProcessor.java:7 53)
    at com.adobe.flexide.as.core.contentassist.ActionScriptCompletionProcess or.computeCompletionProposals(ActionScriptCompletionProcessor.java:109 1)
    at com.adobe.flexide.mxml.core.editor.MXMLActionScriptCompletionProcesso r.computeCompletionProposals(MXMLActionScriptCompletionProcessor.java: 161)
    at com.adobe.flexbuilder.dcrad.core.DCRADContentAssistProcessor.computeC ompletionProposals(DCRADContentAssistProcessor.java:103)
    at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompleti onProposals(ContentAssistant.java:1832)
    at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeP roposals(CompletionProposalPopup.java:556)
    at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$1 6(CompletionProposalPopup.java:553)
    at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(Co mpletionProposalPopup.java:488)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProp osals(CompletionProposalPopup.java:482)
    at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCom pletions(ContentAssistant.java:1660)
    at org.eclipse.jface.text.source.SourceViewer.doOperation(SourceViewer.j ava:835)
    at org.eclipse.jface.text.source.projection.ProjectionViewer.doOperation (ProjectionViewer.java:1533)
    at com.adobe.flexide.editorcore.editor.FlexSourceViewer.doOperation(Flex SourceViewer.java:158)
    at org.eclipse.ui.texteditor.TextOperationAction$1.run(TextOperationActi on.java:131)
    at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
    at org.eclipse.ui.texteditor.TextOperationAction.run(TextOperationAction .java:129)
    at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
    at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185)
    at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyH andlerWrapper.java:109)
    at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
    at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(Para meterizedCommand.java:508)
    at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(Handle rService.java:169)
    at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(Workben chKeyboard.java:470)
    at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboar d.java:824)
    at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(Workbe nchKeyboard.java:880)
    at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindi ngs(WorkbenchKeyboard.java:569)
    at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyb oard.java:510)
    at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEv ent(WorkbenchKeyboard.java:125)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1191)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1002)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)
    at org.eclipse.swt.widgets.Control.traverse(Control.java:3658)
    at org.eclipse.swt.widgets.Control.translateMnemonic(Control.java:3502)
    at org.eclipse.swt.widgets.Composite.translateMnemonic(Composite.java:10 65)
    at org.eclipse.swt.widgets.Control.translateMnemonic(Control.java:3520)
    at org.eclipse.swt.widgets.Display.translateMnemonic(Display.java:4401)
    at org.eclipse.swt.widgets.Display.filterMessage(Display.java:1205)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3469)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.ja va:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.jav a:493)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEAppli cation.java:113)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandl e.java:194)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runAppli cation(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(Ec lipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja va:368)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja va:179)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl. java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces sorImpl.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.java:514)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1311)

Same error for me and all the members of my team.

In particular cases, it keeps throwing me the null pointer exception while using content assist via CTRL+Space.

This is really annoying my Flex 4 development. Is there a workaround?

What I really meant to say is, please add your comments and workspace log to this bug http://bugs.adobe.com/jira/browse/FB-21566.

It's been a tough one to track down, it doesn't happen for everyone. Any additional info you can provide would be great: project type, SDK version (and build number if you're using a nightly), file type, and library path would all be helpful here.

Jason San Jose

Quality Engineer, Flash Builder

No, it's not been fixed. I'm still experiencing it with Flash Builder Beta 2 following configuration :

Adobe Flash Builder Standalone: version 4.0.0.253292

Flex 4.0.0 SDK: build 10485

I am having the same problem. Did you find any solution to it?

Thanks, Carmen

https://bugs.adobe.com/jira/browse/FB-21566

Repeating on the bug comments and on the beta forum...

PLEASE try a clean workspace. In detail:

1) Export the project as an FXP from the workspace that has the problem

2) File > Switch Workspace > Other..., choose a new, empty folder

3) Import the FXP

4) Try code hints

We have in the past seen problems with workspace caches. If we can rule this out, it would help us a lot. I'm trying my best to reproduce the issue, but with no success. The error indicates that a class in your project has no ancestor project...which normally isn't possible unless a cache has gone bad. Again, I need more help since I can't reproduce this. Thanks guys.

Jason San Jose

Quality Engineer, Flash Builder

A more surgical workaround that allows you to keep your workspace settings:

1) Quit FB

2) Delete this folder: .metadata\.plugins\com.adobe.flexbuilder.codemodel

3) Restart FB

Cleaning out the caches works for most people, but others are still reporting the same issues after the workarounds. We're continuing to track this bug here http://bugs.adobe.com/jira/browse/FB-21566.

Jason San Jose

Quality Engineer, Flash Builder

It seems that the following:

"Delete this folder: .metadata\.plugins\com.adobe.flexbuilder.codemodel"

is the current workaround.

Can someone point me to where that folder is on OSX?  I've dug and dug, and removed similar folders, but nothing fixes the issue.

Thanks in advance...

if you want to solve this problem.

you have to have a well operated workspace....

(i have several workspaces one of them is broken some of them are working well)

all you need to do is copy the folder in well working workspace. (.metadata/.plugins/com.adobe.flexbuilder.codemodel)

and then paste in to current workspace you were working on...

try and hit me back if you have any question~!

barty82@naver.com