Installing refills gem gives error

Question

I am trying to install a gem refills for my rails application.

This is what i get when i run gem install refills -v '0.1.0'

ERROR:  Error installing refills:
    invalid gem: package is corrupt, exception while verifying: undefined method `size' for nil:NilClass (NoMethodError) in /home/alfie/.rvm/gems/ruby-2.0.0-p598/cache/refills-0.1.0.gem

Answer 1

Gem Installation was interrupted. All i had to do was delete the file and start again.