rvm jruby problem with scripts

gistfile1.txt

$ bundle
/Users/dalcorn/.rvm/gems/jruby-1.5.6@mimosa2/bin/bundle: line 9: require: command not found
/Users/dalcorn/.rvm/gems/jruby-1.5.6@mimosa2/bin/bundle: line 11: version: command not found
/Users/dalcorn/.rvm/gems/jruby-1.5.6@mimosa2/bin/bundle: line 13: syntax error near unexpected token `('
/Users/dalcorn/.rvm/gems/jruby-1.5.6@mimosa2/bin/bundle: line 13: `if ARGV.first =~ /^_(.*)_$/ and Gem::Version.correct? $1 then'
$ which bundle
/Users/dalcorn/.rvm/gems/jruby-1.5.6@mimosa2/bin/bundle
$ ls -l `which bundle`
-rwxr-xr-x  1 dalcorn  staff  410 Feb 24 15:09 /Users/dalcorn/.rvm/gems/jruby-1.5.6@mimosa2/bin/bundle*
$ head `which bundle`
#!/Users/dalcorn/.rvm/rubies/jruby-1.5.6/bin/jruby
#
# This file was generated by RubyGems.
#
# The application 'bundler' is installed as part of a gem, and
# this file is here to facilitate running it.
#

require 'rubygems'

$ ls -l /Users/dalcorn/.rvm/rubies/jruby-1.5.6/bin/jruby
-rwxr-xr-x  1 dalcorn  staff  10058 Dec  7 15:31 /Users/dalcorn/.rvm/rubies/jruby-1.5.6/bin/jruby*
$ file /Users/dalcorn/.rvm/rubies/jruby-1.5.6/bin/jruby
/Users/dalcorn/.rvm/rubies/jruby-1.5.6/bin/jruby: Bourne-Again shell script text executable
$ head /Users/dalcorn/.rvm/rubies/jruby-1.5.6/bin/jruby
#!/bin/bash
# -----------------------------------------------------------------------------
# jruby.sh - Start Script for the JRuby interpreter
#
# Environment Variable Prequisites
#
#   JRUBY_OPTS    (Optional) Default JRuby command line args
#   JRUBY_SHELL   Where/What is system shell
#
#   JAVA_HOME     Must point at your Java Development Kit installation.

This was solved by re-installing jruby. Newer versions of rvm use the jruby-launcher binary rather than a jruby shell script. "rvm remove jruby; rvm install jruby-1.5.6" just worked. All gemsets left alone and .rvmrc just reloaded the right jruby and it works.