I am developing a Sencha touch 2 application. I have been following the \"Styling the user interface of a Sencha Touch application\" tutorial on theming of secha touch appli
I had a similar problem, it worked on my own private laptop, but failed while using a virtual server at work (running Ubuntu 12.10) that used a proxy.
Following the suggestion I found here, from the command line I defined:
export HTTPS_PROXY=proxy-address:proxy-port-number
export HTTP_PROXY=proxy-address:proxy-port-number
and then my gem install package worked fine.