Rails 2.3 Issue with bootstrap radiant CMS


while i doing “rake production db:bootstrap” in Rails 2.3 for radiant cms I getting the following error, can anyone help me to sort out this problem.

(in /home/XXXXx/Projects/XXX)
Extensions cannot be used until Radiant migrations are up to date.
rake aborted!
uninitialized constant ActionMailer::ARMailer

Best Regards,

Gopinath M