Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I would like to install Rails 3.0 Beta but ran into what appears to be a dependency error:
$: sudo gem install rack-mount
Successfully installed rack-mount-0.5.1
1 gem installed
Installing ri documentation for rack-mount-0.5.1...
Installing RDoc documentation for rack-mount-0.5.1...
$: sudo gem install rails --prerelease
ERROR: Error installing rails:
actionpack requires rack-mount (~> 0.4.0, runtime)
Why is it unable to recognize that rack-mount is already installed?
As noted in the comments here, you need
rack-mountat exactly version 0.4.0. Install with the following command: