when i executing 'RVM install 2.1.5', it gives me errors
Error running '__rvm_package_extract /usr/local/rvm/archives/ruby-2.1.5.tar.bz2 /usr/local/rvm/tmp/rvm_src_7085'    
help me to fix this issues,thanks
here i added some more errors while installing ruby
mkdir: /usr/local/rvm/tmp/rvm_src_7085: Permission denied
ruby-2.1.5 - #extracting ruby-2.1.5 to /usr/local/rvm/src/ruby-2.1.5....
Error running '__rvm_package_extract /usr/local/rvm/archives/ruby-2.1.5.tar.bz2 /usr/local/rvm/tmp/rvm_src_7085',
showing last 15 lines of /usr/local/rvm/log/1418271602_ruby-2.1.5/extract.log
++ [[ -d '' ]]
++ mkdir -p ''
mkdir: : No such file or directory
++ case "$1" in
++ [[ -n '' ]]
++ __rvm_tar xjf /usr/local/rvm/archives/ruby-2.1.5.tar.bz2 -C ''
++ tar xjf /usr/local/rvm/archives/ruby-2.1.5.tar.bz2 -C ''
tar: could not chdir to ''
++ return 1
++ return 1
++ __return=1
++ ((  __return == 0  ))
++ [[ -n '' ]]
++ return 1
There has been an error while trying to extract the source. Halting the installation.
There has been an error fetching the ruby interpreter. Halting the installation.
After up-gradation to MAC OS X Yosemite it gives the error ,in mavericks it works fine
rvm info gives the following
ruby-2.1.3:
  system:
    uname:       "Darwin D007.local 14.0.0 Darwin Kernel Version 14.0.0: Fri Sep 19 00:26:44 PDT 2014; root:xnu-2782.1.97~2/RELEASE_X86_64 x86_64"
    system:      "osx/10.10/x86_64"
    bash:        "/bin/bash => GNU bash, version 3.2.53(1)-release (x86_64-apple-darwin14)"
    zsh:         "/bin/zsh => zsh 5.0.5 (x86_64-apple-darwin14.0)"
  rvm:
    version:      "rvm 1.26.4 (latest) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]"
    updated:      "31 minutes 59 seconds ago"
    path:         "/usr/local/rvm"
  ruby:
    interpreter:  "ruby"
    version:      "2.1.3p242"
    date:         "2014-09-19"
    platform:     "x86_64-darwin13.0"
    patchlevel:   "2014-09-19 revision 47630"
    full_version: "ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-darwin13.0]"
  homes:
    gem:          "/usr/local/rvm/gems/ruby-2.1.3"
    ruby:         "/usr/local/rvm/rubies/ruby-2.1.3"
  binaries:
    ruby:         "/usr/local/rvm/rubies/ruby-2.1.3/bin/ruby"
    irb:          "/usr/local/rvm/rubies/ruby-2.1.3/bin/irb"
    gem:          "/usr/local/rvm/rubies/ruby-2.1.3/bin/gem"
    rake:         "/usr/local/rvm/gems/ruby-2.1.3/bin/rake"
  environment:
    PATH:         "/usr/local/rvm/gems/ruby-2.1.3/bin:/usr/local/rvm/gems/ruby-2.1.3@global/bin:/usr/local/rvm/rubies/ruby-2.1.3/bin:/usr/local/heroku/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/rvm/bin:/Users/prakash/.rvm/bin"
    GEM_HOME:     "/usr/local/rvm/gems/ruby-2.1.3"
    GEM_PATH:     "/usr/local/rvm/gems/ruby-2.1.3:/usr/local/rvm/gems/ruby-2.1.3@global"
    MY_RUBY_HOME: "/usr/local/rvm/rubies/ruby-2.1.3"
    IRBRC:        "/usr/local/rvm/rubies/ruby-2.1.3/.irbrc"
    RUBYOPT:      ""
    gemset:       ""
 
     
    