Mysql::Error: query: not connected

MySQL 5.1 client library doesn't play well with Rails

download:
http://instantrails.rubyforge.org/svn/trunk/InstantRails-win/InstantRails/mysql/bin/libmySQL.dll

source:
http://forums.aptana.com/viewtopic.php?f=20&t=7563&p=27407&hilit=libmysql.dll#p27407