Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I get the following Passenger error:

undefined method `post_reset' for Gem:Module

Someone knows what this could mean? Thanks!

share|improve this question
up vote 1 down vote accepted

I've got the very same error after performing a gem pristine --all to get rid of the annoying deprecation messages introduced with the latest rubygems update.

After that my got deleted resulting in this (misleading) error message. Try restarting Apache, it won't be possible if you are having the same problem.

The solution was to once again execute passenger-install-apache2-module. After that I could restart Apache and the error was gone.

share|improve this answer

i tried it myself and ended up with downgrading rubygems to 1.7.2, works again!

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.