ruby - rvm - won't set default -


i've tried still running rvm , ruby versions.

given rvm --default still won't work (not on permanent basis) despite cleaning path, thought i'd hack , link /usr/bin/ruby ruby gem. still not working. e.g. see this:

irb 2.1.5 :001 > require 'somegem' /users/snowcrash/.rvm/gems/ruby-2.1.5@global/gems/json-1.8.2/lib/json/ext/parser.bundle: [bug] segmentation fault ruby 2.0.0p481 (2014-05-08 revision 45883) [universal.x86_64-darwin14]

and 

$ rvm list  rvm rubies     ruby-1.9.3-p327 [ x86_64 ]    ruby-2.0.0-p195 [ x86_64 ]    ruby-2.0.0-p598 [ x86_64 ] =* ruby-2.1.5 [ x86_64 ]  # => - current # =* - current && default

any further suggestions?


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