Rails - Jul 2006 - Rails Gem error after update

Hi,

I''ve updated rails to 1.1.4, and have also done a ''gem
cleanup'' so
older versions are gone.

I went to a little app I had created back when I had 1.1.2. I tried to do a

script/generate migration xxxx

and got an error:

Cannot find gem for Rails =1.1.2:
    Install the missing gem with ''gem install -v=1.1.2 rails'',
or
    change environment.rb to define RAILS_GEM_VERSION with your desired version.

In the environment.rb file, there''s the lines:
  # Specifies gem version of Rails to use when vendor/rails is not present
  RAILS_GEM_VERSION = ''1.1.2''

I suppose I can just change that, but.. is that what is to be done
when updating Rails? Do I now have to do it with any other apps I''ve
got?

Doing a rake rails:update gives the same error.

Thanks for any help!

jt