Error while adding new plugin in eclipse

Question

When i tried to instail this plugin

http://fornwall.net/eclipsecoder/ to compete in Arena at TopCoder

I found this problem.

http://i.stack.imgur.com/Vvc

Answer 1

I think that you have invalid update site URLs in the available update site list (Window > Install/Update > Available Software site). Remove or disable the update site causing problem and retry adding the proper update site URL you want to access: http://fornwall.net/eclipsecoder/