Eclipseで比較エディタが開けなくなった。

Eclipse Version: 3.6.1

Updateかけたら比較エディタが開けなくなった。

こんなエラーが出る。

Could not open the editor: An unexpected exception was thrown.

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(ContentMergeViewer.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:778)
 at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
 at org.eclipse.compare.CompareEditorInput.feed1(CompareEditorInput.java:772)
 at org.eclipse.compare.CompareEditorInput.feedInput(CompareEditorInput.java:750)
 at org.eclipse.compare.CompareEditorInput.createContents(CompareEditorInput.java:554)
 at org.eclipse.compare.internal.CompareEditor.createCompareControl(CompareEditor.java:456)
 at org.eclipse.compare.internal.CompareEditor.createPartControl(CompareEditor.java:414)
 at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:670)
 at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)

数日無視してたんですが、、地味に困るぜ、、ということで調べてみた。

何でも知ってるGoogle先生に聞けばすぐに判明。
https://bugs.eclipse.org/bugs/show_bug.cgi?id=326227
PDTのバグらしい。

Updateサイトを登録してHelp>Check for Updates
http://download.eclipse.org/tools/pdt/updates/2.2/milestones

PDT2.2が落ちてくるので更新すればOK。