eclipse plugin objectaid install failed

Question

I'd like to make some class diagrams from source code and want to install objectaid which is an eclipse plugin that helps to generate UML diagram.

Help->Install new software->add->http://www.objectaid.net/update

It stucked on 48% and displayed "fetching ..." and several hours later it showed the following errors

An error occurred while collecting items to be installed
session context was:(profile=epp.package.java, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.bridge_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.dom_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.dom.svg_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.ext.awt_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.extension_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/features/org.apache.batik_1.6.0.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.parser_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.pdf_1.6.0.v201105071520.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.svggen_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.swing_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.transcoder_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.apache.batik.xml_1.6.0.v201011041432.jar
Connection timed out: connect
Unable to connect to repository http://www.objectaid.net/update/plugins/org.w3c.dom.smil_1.0.1.v200903091627.jar
Connection timed out: connect

There is a firewall and I had used goagent to cross the wall.

Answer 1

Definitely looks like a network issue. I used the same repository url and I was able to successfully install ObjectAid inside eclipse. Do checkout the step , I have compiled it with a screenshot - in case you are missing anything.