Rails Server won't start after Ruby upgrade - Segmentation Fault

Question

After upgrading my Ruby to 1.9.3-p429, I tried to start the Rails server. It told me rails was not installed so, I boldly did a 'gem install rails'. Now when I try to start the server, I'm getting this:

andrunix@amp-laptop~/code/madrilla$ rails s
/Users/andrunix/.rvm/gems/ruby-1.9.3-p429/gems/mysql2-0.3.11/lib/mysql2/mysql2.bundle: [BUG] Segmentation fault
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin12.0]

Abort trap: 6

I have no idea why that says, "ruby 1.8.7" in that output. Perhaps that's a clue to my problem.

But anyway, super frustrated at this point.

And by the way, this is on OS X.

Help me please!

Answer 1

尝试将已安装的版本设置为整个系统的默认版本：

rvm --default use  ruby-1.9.3-p429