Error running Rails server on OS 10.10.2 - ruby-on-rails

Question

Versions
Mac OS: OSX 10.10.2
Ruby: 2.2.1p85
Rails: 4.2.0
Context
I am following the "Install Rails" tutorial online at www.installrails.com. Finally made it through after encountering many errors. I am on the last step of creating a sample app, which it worked fine, and then running the server. Now, I run into another error.
Errors
Here is what I am seeing:
/Users/Work/.rvm/gems/ruby-2.2.1/gems/json-1.8.2/lib/json/ext/parser.bundle: [BUG] Segmentation fault at 0x00000000000418
ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-darwin14]
-- Crash Report log information --------------------------------------------
See Crash Report log file under the one of following:
* ~/Library/Logs/CrashReporter
* /Library/Logs/CrashReporter
* ~/Library/Logs/DiagnosticReports
* /Library/Logs/DiagnosticReports
for more details.
-- Control frame information -----------------------------------------------
*A lot of information listed here*
-- Ruby level backtrace information ----------------------------------------
*A lot of information listed here*
-- Machine register context ------------------------------------------------
*A lot of information listed here*
-- C level backtrace information -------------------------------------------
*A lot of information listed here*
-- Other runtime information -----------------------------------------------
* Loaded script: bin/rails
* Loaded features:
*And then a long list of files listed here*
[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
Don't forget to include the above Crash Report log file.
For details: http://www.ruby-lang.org/bugreport.html
Abort trap: 6
Help
Now, I am wondering if it is the json gem that is causing a problem?
Let me know if you need any of the removed information. The bug report was really long so I removed the codes where it says A lot of information listed here for brevity.

Answer 1

Per a suggestion by #maxd, I ended up having to uninstall and reinstall ruby.
Here is the process I followed.
I uninstalled Ruby with command line rvm remove 2.2.1
I reinstall 2.2.1 with the command line rvm install 2.2.1
Then I reinstalled rails with command line sudo gem install rails
Then I used bundle install to reinstall missing gems
Next, I used gem install rubygems-update to update Rubygems from 2.0.14 to 2.1.
Then I reset gems to pristine condition with gem pristine --all.
Then for some reason I had to rerun bundle install because actionmailer 4.2.0 was no longer showing as being installed, even though it was in the list after the first bundle install.
Finally running rails -v gave me an output of Rails 4.2.0 instead of error codes.
So, I ran rails server and all is well.

Answer 2

I solved this problem. But I not certain this is a GOOD way.
first, I reinstalled ruby. since, I looks like version problem as I see.
rvm reinstall all
and gem install rails. After this process, I can run server with rails server command.
I hope this could be a your solution too. Have a good day :D

Answer 3

I was experiencing the same problem in my mac mini(M1). The following solution worked for me found in the developer forum.
sudo arch -x86_64 gem install ffi
Then
arch -x86_64 pod install