I'm unable install the android plug in Eclipse helio in windows

When i'm trying to install android plugin in eclipse i got this error

" An error occurred while collecting items to be installed session context was:(profile=epp.package.jee, phase=org.eclipse.equino开发者_如何学Pythonx.internal.p2.engine.phases.Collect, operand=, action=). Unable to read repository at http://downloads.myeclipseide.com/downloads/products/eworkbench/helios/9.0M1/plugins/org.maven.ide.eclipse.maven_embedder_0.10.0.me201003101716.jar. Read timed out "

please any one can give me a solution

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go to eclipse preference, network connection. select manual not native