Just switched to JRuby, having some trouble getting rails started

I just installed JRuby on my mac using the following command:

rvm install jruby-1.6.4

And then installed rails using the following command:

rvmsudo gem install rails

When I try to start my server, I get the fo开发者_如何学Pythonllowing error:

Invalid memory access of location 0x0 rip=0x10fc4c5f9
[1]    14068 segmentation fault  rails server

Has anyone seen this before? What should I do?

Thanks.