Question

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=).
Unable to read repository at http://dl.google.com/eclipse/plugin/3.7/plugins/com.google.appengine.eclipse.core_2.3.3.r37v201107211953.jar.
Read timed out
Unable to read repository at http://dl.google.com/eclipse/plugin/3.7/plugins/com.google.gdt.eclipse.core_2.3.3.r37v201107211953.jar.
Read timed out
Unable to read repository at http://dl.google.com/eclipse/plugin/3.7/plugins/com.google.gdt.eclipse.maven_2.3.3.r37v201107211953.jar.
Read timed out
Unable to read repository at http://dl.google.com/eclipse/plugin/3.7/plugins/com.google.gwt.eclipse.core_2.3.3.r37v201107211953.jar.
Read timed out

Answer 1

I’ve solved it by downloading the repository from a hidden link:

http://dl.google.com/eclipse/plugin/core/3.7/zips/gpe-e37-latest-updatesite.zip

and updating from there

See the documentation on Google’s website.