undefined method `define_index' for #<Class:0x2b199d6b6a48>

** Execute db:migrate
==  AddPositionToEpisodes: migrating ==========================================
-- add_column(:episodes, :position, :integer, {:default=>0})
   -> 0.0416s
rake aborted!
An error has occurred, this and all later migrations canceled:

undefined method `define_index' for #<Class:0x2b199d6b6a48>
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/base.rb:1964:in `method_missing_without_paginate'
/usr/lib/ruby/gems/1.8/gems/mislav-will_paginate-2.3.8/lib/will_paginate/finder.rb:168:in `method_missing'
/home/nate/sites/seocasts/releases/20090321134111/app/models/episode.rb:19
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:380:in `load_without_new_constant_marking'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:380:in `load_file'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:379:in `load_file'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:259:in `require_or_load'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:425:in `load_missing_constant'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:80:in `const_missing'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:92:in `const_missing'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:98:in `send'
/usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:98:in `const_missing'
./db/migrate//20080702045900_add_position_to_episodes.rb:4:in `up_without_benchmarks'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:282:in `send'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:282:in `migrate'
/usr/lib/ruby/1.8/benchmark.rb:293:in `measure'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:282:in `migrate'
(__DELEGATION__):2:in `__send__'
(__DELEGATION__):2:in `migrate'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:486:in `migrate'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:560:in `call'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:560:in `ddl_transaction'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/connection_adapters/abstract/database_statements.rb:136:in `transaction'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/transactions.rb:182:in `transaction'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:560:in `ddl_transaction'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:485:in `migrate'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:472:in `each'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:472:in `migrate'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:400:in `up'
/usr/lib/ruby/gems/1.8/gems/activerecord-2.3.2/lib/active_record/migration.rb:383:in `migrate'
/usr/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/tasks/databases.rake:116
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:617:in `call'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:617:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:612:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:612:in `execute'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:578:in `invoke_with_call_chain'
/usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:571:in `invoke_with_call_chain'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:564:in `invoke'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2027:in `invoke_task'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2005:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2005:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2005:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2044:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:1999:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:1977:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:2044:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/lib/rake.rb:1974:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.4/bin/rake:31
/usr/bin/rake:19:in `load'
/usr/bin/rake:19