M2Eclipse和Helios-错误

我下载了最新的EclipseHeliosJavaEE包并成功地安装了它。 现在我想安装m2eclipse并使用更新站点 http://m2eclipse.sonatype.org/sites/m2e (见此处: http://m2eclipse.sonatype.org/installing-m2eclipse.html )

出现错误:

An error occurred while collecting items to be installed session context was:(profile=epp.package.jee, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
No repository found containing: osgi.bundle,org.maven.ide.eclipse,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.archetype_common,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.dependency_tree,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.editor,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.editor.xml,0.10.2.20100623-1649
No repository found containing: org.eclipse.update.feature,org.maven.ide.eclipse.feature,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.jdt,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.launching,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.maven_embedder,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.maven_model_edit,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.nexus_indexer,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.pr,0.10.2.20100623-1649
No repository found containing: osgi.bundle,org.maven.ide.eclipse.refactoring,0.10.2.20100623-1649

另一方面,我发现: http://www.sonatype.com/books/m2eclipse-book/reference/install-sect-marketplace.html 使用新的Eclipse市场。我搜索了m2eclipse,但是没有安装按钮,只有“了解更多”。

怎么了?如何使用Helios安装m2eclipse?

事先谢谢,并致以最诚挚的问候。