Problem to generate rx_config

[Sira P.]

I working on http://dima.github.com/2009/03/19/working-with-restfulx-model-attachments.html

I use jRuby. I run the command to run ./script/generate rx_config vai
jRuby -S ./script/generate rx_config. But I always get the error
"Unable to download and install http://restfulx.github.com/releases/restfulx-1.3.1.swc.
Please check your internet connectivity and try again."

My internet connection is work fine and I tried to manually download
from http://restfulx.github.com/releases/restfulx-1.3.1.swc. But it
seems like the link is broken.