Error reinstalling RVM 2.1.6

I am getting error reinstalling RVM 2.1.6. Can anyone suggest what I need to do to resolve this issue??

Error running '__rvm_with ruby-2.1.6 gemset_pristine',
showing last 15 lines of /Users/kganapathi/.rvm/log/1476300266_ruby-2.1.6/gemset.pristine-ruby-2.1.6.log
++ _failed+=("${_gem} --version ${_version}")
++ read _gem _version _platforms
++ ((  1 > 0  ))
++ rvm_error '\n'\''command gem pristine  --version '\'' failed, you need to fix this gems manually.'
++ rvm_pretty_print stderr
++ case "${rvm_pretty_print_flag:=auto}" in
++ case "${TERM:-dumb}" in
++ case "$1" in
++ [[ -t 2 ]]
++ return 1
++ printf %b '\n'\''command gem pristine  --version '\'' failed, you need to fix this gems manually.\n'

'command gem pristine  --version ' failed, you need to fix this gems manually.
++ return 1
++ return 1