又这样啊：

An error occurred while collecting items to be installed

session context was:(profile=epp.package.standard, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).

No repository found containing: osgi.bundle,org.apache.xerces,2.9.0.v201101211617

No repository found containing: osgi.bundle,org.apache.xml.resolver,1.2.0.v201005080400

No repository found containing: osgi.bundle,org.apache.xml.serializer,2.7.1.v201005080400

No repository found containing: osgi.bundle,org.eclipse.cdt,8.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.codan.checkers,3.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.codan.checkers.ui,3.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.codan.core,3.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.codan.core.cxx,3.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.codan.ui,3.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.codan.ui.cxx,3.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.core,5.6.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.core.win32,5.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.core.win32.x86,5.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.debug.core,7.4.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.debug.mi.core,7.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.debug.mi.ui,6.1.1.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.debug.ui,7.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.doc.user,5.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.dsf,2.4.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.dsf.gdb,4.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.dsf.gdb.ui,2.4.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.dsf.ui,2.4.0.201402142303

No repository found containing: org.eclipse.update.feature,org.eclipse.cdt,8.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.gdb,7.0.0.201402142303

No repository found containing: org.eclipse.update.feature,org.eclipse.cdt.gdb,8.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.gdb.ui,7.0.0.201402142303

No repository found containing: org.eclipse.update.feature,org.eclipse.cdt.gnu.build,8.3.0.201402142303

No repository found containing: org.eclipse.update.feature,org.eclipse.cdt.gnu.debug,8.3.0.201402142303

No repository found containing: org.eclipse.update.feature,org.eclipse.cdt.gnu.dsf,8.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.launch,7.1.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.make.core,7.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.make.ui,7.2.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.managedbuilder.core,8.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.managedbuilder.gnu.ui,8.2.1.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.managedbuilder.ui,8.2.1.201402142303

No repository found containing: org.eclipse.update.feature,org.eclipse.cdt.platform,8.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.cdt.ui,5.7.0.201402142303

No repository found containing: binary,org.eclipse.cdt_root,8.3.0.201402142303

No repository found containing: osgi.bundle,org.eclipse.wst.common.core,1.2.0.v200908252030

No repository found containing: osgi.bundle,org.eclipse.wst.common.environment,1.0.400.v200912181832

No repository found containing: osgi.bundle,org.eclipse.wst.common.frameworks,1.2.200.v201203141800

No repository found containing: osgi.bundle,org.eclipse.wst.common.frameworks.ui,1.2.201.v201208292200

No repository found containing: osgi.bundle,org.eclipse.wst.common.project.facet.core,1.4.300.v201111030424

No repository found containing: osgi.bundle,org.eclipse.wst.common.ui,1.1.500.v200911190730

No repository found containing: osgi.bundle,org.eclipse.wst.common.uriresolver,1.2.100.v201305141800

No repository found containing: osgi.bundle,org.eclipse.wst.sse.core,1.1.802.v201401101620

No repository found containing: osgi.bundle,org.eclipse.wst.sse.ui,1.3.201.v201401132128

No repository found containing: osgi.bundle,org.eclipse.wst.validation,1.2.501.v201311151800

No repository found containing: osgi.bundle,org.eclipse.wst.validation.ui,1.2.401.v201310231535

No repository found containing: osgi.bundle,org.eclipse.wst.xml.core,1.1.801.v201308100603

No repository found containing: osgi.bundle,org.eclipse.wst.xml.ui,1.1.401.v201308132110