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上記で報告された Eclipse エラー メッセージを解決するにはどうすればよいですか? 追加の詳細を以下に示します。

例外スタック トレース

java.lang.NullPointerException
    at org.eclipse.m2e.jdt.internal.MavenClasspathContainerInitializer.initialize(MavenClasspathContainerInitializer.java:48)
    at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2843)
    at org.eclipse.jdt.internal.core.JavaModelManager$11.run(JavaModelManager.java:2749)
    at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
    at org.eclipse.jdt.internal.core.JavaModelManager.initializeAllContainers(JavaModelManager.java:2789)
    at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1873)
    at org.eclipse.jdt.core.JavaCore.initializeAfterLoad(JavaCore.java:3886)
    at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:36)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

セッションデータ

eclipse.buildId=I20120608-1400
java.version=1.7.0_08-ea
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.jee.product -keyring /Users/ravisankars/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.jee.product -keyring /Users/ravisankars/.eclipse_keyring -showlocation
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