Capistrano deploy errors

Hi, when I do cap deploy:cold I get this error:

rake aborted!
undefined local variable or method `acts_as_commentable' for #<Class:
0x7fa1c34a2f10>
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
base.rb:1833:in `method_missing_without_paginate'
/usr/local/lib/ruby/gems/1.8/gems/mislav-will_paginate-2.3.8/lib/
will_paginate/finder.rb:170:in `method_missing'
/var/www/testapp/releases/20090315203606/app/models/nibble.rb:2
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:382:in
`load_without_new_constant_marking'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:382:in `load_file'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:381:in `load_file'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:256:in `require_or_load'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:427:in `load_missing_constant'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:77:in `const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:89:in `const_missing'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/inflector.rb:352:in `constantize'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/inflector.rb:351:in `each'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/inflector.rb:351:in `constantize'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/core_ext/string/inflections.rb:162:in `constantize'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
observer.rb:157:in `observed_class'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
observer.rb:183:in `observed_classes'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
observer.rb:166:in `initialize'
/usr/local/lib/ruby/1.8/singleton.rb:94:in `new'
/usr/local/lib/ruby/1.8/singleton.rb:94:in `instance'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
observer.rb:38:in `instantiate_observers'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
observer.rb:36:in `each'
/usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.2/lib/active_record/
observer.rb:36:in `instantiate_observers'
/usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.2/lib/
action_controller/dispatcher.rb:26:in `define_dispatcher_callbacks'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:182:in `call'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:182:in `evaluate_method'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:166:in `call'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:90:in `run'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:90:in `each'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:90:in `send'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:90:in `run'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/callbacks.rb:277:in `run_callbacks'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:
559:in `send'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:
559:in `prepare_dispatcher'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:
173:in `process'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:
112:in `send'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/initializer.rb:
112:in `run'
/var/www/testapp/releases/20090315203606/config/environment.rb:13
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
/usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
`require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:153:in `require'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:521:in `new_constants_in'
/usr/local/lib/ruby/gems/1.8/gems/activesupport-2.2.2/lib/
active_support/dependencies.rb:153:in `require'
/usr/local/lib/ruby/gems/1.8/gems/rails-2.2.2/lib/tasks/misc.rake:3
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:617:in `call'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:617:in
`execute'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:612:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:612:in
`execute'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:578:in
`invoke_with_call_chain'
/usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:571:in
`invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:588:in
`invoke_prerequisites'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:585:in `each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:585:in
`invoke_prerequisites'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:577:in
`invoke_with_call_chain'
/usr/local/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:571:in
`invoke_with_call_chain'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:564:in
`invoke'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2027:in
`invoke_task'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2005:in
`top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2005:in
`each'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2005:in
`top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2044:in
`standard_exception_handling'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:1999:in
`top_level'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:1977:in `run'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2044:in
`standard_exception_handling'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:1974:in `run'
/usr/local/lib/ruby/gems/1.8/gems/rake-0.8.4/bin/rake:31
/usr/local/bin/rake:19:in `load'
/usr/local/bin/rake:19

This error happens when capistrano tries to run rake db:migrate

I hate to ask the obvious, but... does the server you are pushing to
have that installed, or is it in your source and properly in your SCM?

I just checked and the plugin directory is in the source, but after
you mentioned that I took a look inside the directory and it was
empty. I'm using Git and I didn't have vendor/plugins in
the .gitignore so I'm not sure why it isn't also including the
contents of each plugin.

Fixed the error. I had to remove the .git and .gitignore directory and
file from the plugin directories individually.