Don't know how to build task 'db:migrate:engines'

Hi Peeps

I tried running this command "rake engine_migrate” and it gives me this
error (rake aborted! Don’t know how to build task ‘db:migrate:engines’
). Base on what I have read in this mailing list it has something to do
with the version of the rails. I tried executing this command rake
db:migrate:engines ENGINE=help it still gives me the same error. I donÂ’t
know what to do it is my first time using this engines. I follow every
instruction posted in the engine and helpengine readme file. Kinda new
here in using this stuff and in Ruby on rails as well I really need your
help . Btw, I am using rails 1.2.3 and engine 1.2.0



You probably need to read the README files within the engines plugin -
migration behaviour changed considerably with the 1.2.0 release.