Eclipse problem with subclipse

Me and my partner installed from scratch eclipse with subclipse...But neither me or he can compare the files!!

Right Clicking a file >Compare with > Revision or anything we tried in order to make a comparison it failed and always will! I get an error of java.lang.nullpointerexception and nothing more!

Here is what i get from the log

!ENTRY org.eclipse.jface 4 2 2010-11-20 04:36:28.653 !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface". !STACK 0 java.lang.NullPointerException at org.eclipse.php.internal.core.format.FormatPreferencesSupport.verifyValidity(FormatPreferencesSupport.java:100) at org.eclipse.php.internal.core.format.FormatPreferencesSupport.getIndentationChar(FormatPreferencesSupport.java:89) at org.eclipse.php.internal.ui.editor.configuration.PHPStructuredTextViewerConfiguration.getIndentPrefixes(PHPStructuredTextViewerConfiguration.java:448) at org.eclipse.wst.sse.ui.internal.StructuredTextViewer.configure(StructuredTextViewer.java:311) at org.eclipse.php.internal.ui.compare.MergeSourceViewer.configure(MergeSourceViewer.java:542) at org.eclipse.php.internal.ui.compare.TextMergeViewer$ContributorInfo.internalSetDocument(TextMergeViewer.java:546) at org.eclipse.php.internal.ui.compare.TextMergeViewer$ContributorInfo.setDocument(TextMergeViewer.java:434) at org.eclipse.php.internal.ui.compare.TextMergeViewer.updateContent(TextMergeViewer.java:2569) at org.eclipse.php.internal.ui.compare.ContentMergeViewer.internalRefresh(ContentMe开发者_StackOverflow中文版rgeViewer.java:814) at org.eclipse.php.internal.ui.compare.ContentMergeViewer.inputChanged(ContentMergeViewer.java:704) at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:274) at org.eclipse.compare.CompareViewerSwitchingPane.setInput(CompareViewerSwitchingPane.java:276) at org.eclipse.compare.internal.CompareContentViewerSwitchingPane.setInput(CompareContentViewerSwitchingPane.java:158) at org.eclipse.compare.CompareEditorInput.internalSetContentPaneInput(CompareEditorInput.java:844) at org.eclipse.compare.CompareEditorInput.access$8(CompareEditorInput.java:842) at org.eclipse.compare.CompareEditorInput$11.run(CompareEditorInput.java:785) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.compare.CompareEditorInput.feed1(CompareEditorInput.java:772) at org.eclipse.compare.CompareEditorInput.access$3(CompareEditorInput.java:771) at org.eclipse.compare.CompareEditorInput$5.open(CompareEditorInput.java:657) at org.eclipse.compare.CompareViewerPane.open(CompareViewerPane.java:325) at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:845) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175) at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:843) at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1131) at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1235) at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:264) at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:258) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:298) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369) 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:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407)

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I had this problem and solved it by going Help -> Install new software -> Enter: http://download.eclipse.org/tools/pdt/updates/2.2/milestones/

And install. (This is the same procedure as described in the above links).

Compare works again!

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See this question:

When synchronizing in eclipse pdt - getting a blank gray window when comparing versions of a php file

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Ok i found that my link is posted to the bug! The boredom of the programmer who ignored this bug may cause ULTRA SEVERE problems to other people... https://bugs.eclipse.org/bugs/show_bug.cgi?id=326194