Cannot Install Aptana plugin on Eclipse 4.2

Question

I\'ve installed Eclipse 4.2 Juno. Now I want to install aptana for developing ruby, but I get the following error,

Unable to read repository at http://dow

Answer 1

Adding this answer in case somebody still gets this error while using the correct URL from JonB's answer (http://download.aptana.com/studio3/plugin/install )

Restart Eclipse and try again. This appears to be a transient issue, as mentioned here: Aptana studio 3 cannot contact download.ecplise.org

It worked for me after a retry.