From: Renato Correa Date: 2009-12-15T05:25:18+09:00 Subject: Re: feezing mysql gem + unitiliazed constant MysqlCompat::Mysql Downgrading the mysql gem to 2.7 didn't work either on rails 2.3.5 The solution I found was that my host machine didn't had libmysql-ruby installed. So I had to manually install it and then my deploy went fine. -- Posted via http://www.ruby-forum.com/.