Just installed Mountain Lion 10.8 fresh on my Mac Mini with a new SSD. As I get my rails environment up and running I ran into this common problem:
WARNING: Nokogiri was built against LibXML version 2.9.0, but has dynamically loaded 2.7.8
I had installed nokogiri with bundler. Unfortunately I don’t know which of these things quite resolved my issue, but this is what I did:
gem uninstall nokogiri brew update brew uninstall libxml2 brew install libxml2 --with-xml2-config bundle exec gem pristine nokogiri
After all this, the warning was gone. I wish I knew which of these was extraneous, if any, but I guess I’ll find out next time assuming this common problem doesn’t get smoothed out upstream.