Upgraded to Rails 2.2.0 -- bringing up Mongrel now fails

Installing Rails 2.2

I was running
• Rails 2 (ver. 2.0.2, I think)
• Gem (ver. 1.0.1)

I upgraded to 2.2 with the following commands:
gem update –system
cd’d to the ruby-container directory
gem install rails
rails –v (yielded: 2.2.0)
setenv -m rails_gem_version 2.2 (set the machine’s
“rails_gem_version” to 2.2)
echo %rails_gem_version% (yielded: 2.2)

I had a partial app I created under Rails 2 working. (Rails 2.0.2, I

Today, I ran:
K:_Projects\Ruby_Rails_Apps\Payroll>ruby script/server

I got:
=> Booting Mongrel (use ‘script/server webrick’ to force WEBrick)
=> Rails 2.2.0 application starting on
=> Call with -d to detach
=> Ctrl-C to shutdown server
** Starting Mongrel listening at
** Starting Rails with development environment…
lib/initializer.rb:514:in send': undefined method cache_template_extensions=’

Possible mistakes I can think of:

  1. I installed Rails 2.2 instead of merely updating the existing
    Rails 2.0.2
  2. gen –v produces 1.3.1 — I don’t know if that’s a problem
  3. I created a machine’s environment variable “rails_gem_version”
    and set it to 2.2
  4. I change config/environment.rb alternately from RAILS_GEM_VERSION =
    ‘2.0.2’ unless defined? RAILS_GEM_VERSION to:
    – RAILS_GEM_VERSION = ‘2.2’ unless defined? RAILS_GEM_VERSION
    – RAILS_GEM_VERSION = ‘2.2’
    – RAILS_GEM_VERSION = ‘2.2.0’

Thanks in advance for any ideas on what the problem may be,

Have a look at this:

Sent from my iPhone

On 13 Nov 2008, at 18:13, RichardOnRails
<[email protected]


gem install rails


cache_template_extensions was a deprecated setting and has since been

Hi Freddy and Frederick,

Thanks for you responses. I see from the Github site that
cache_template_extensions has been deprecated.

An exhaustive search of rb/erb/rhtml files in my Ruby/Rails directory
reveals that “cache_template_extensions” appears only in the non-2.2
versions of some Rails components.

A search of my old Payroll app, now renamed to Payroll-1, showed only
one instance of “cache_template_extensions” containment in
Payroll-1\config\environments\development.rb. Sounds like that’s my
culprit. I commented it out.

Things are back to normal. I wonder if I should expect any more
surprises. Perhaps I should start from scratch with Rail 2.2.

Again thanks to both of you for your help.

Best wishes,

On Nov 13, 2:43 pm, Frederick C. [email protected]