How to modify the gemfile? (marshal data too short)

Question

I'm trying to install rails but I get a "marshal data too short" error. I read in this question ( bundle update fails : marshal data too short ) that I can update the Gemfile to make it work.

My problem is that I really have no idea how to modify this "Gemfile".

Thx.

Answer 1

Damn, it was so simple... to update the gemfile, you only got to execute these two command lines:

gem source -r https://rubygems.org/
gem source -a http://rubygems.org/

Then you can execute your installation normally:

gem install rails