Hi,

I’ve installed OpenProject 3.0 (stable) on an CentOS 6.5 Server (thanks to the Instructions on this page).
I also copied the database from an existing OpenProject 3.0 (beta) server to the new one, which worked well also.
But when I installed the Meetings Plugin (which was installed on the old Server as well) and tried to execute the

bundle exec rake db:migrate

command. I get an error:

[openproject@openproject]$ bundle exec rake db:migrate
require 'rails/all'... 0.300s
Bundler.require... 1.310s
Application.initialize!... 2.260s
==  AggregatedMeetingMigrations: migrating ====================================
-- create_table("meeting_contents")
rake aborted!
An error has occurred, this and all later migrations canceled:

PG::DuplicateTable: FEHLER:  Relation „meeting_contents“ existiert bereits
: CREATE TABLE "meeting_contents" ("id" serial primary key, "type" character varying(255), "meeting_id" integer, "author_id" integer, "text" text, "lock_version" integer, "created_at" timestamp NOT NULL, "updated_at" timestamp NOT NULL, "locked" boolean DEFAULT 'f') /home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/postgresql_adapter.rb:650:in `async_exec'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/postgresql_adapter.rb:650:in `block in execute'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/abstract_adapter.rb:280:in `block in log'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activesupport-3.2.17/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/abstract_adapter.rb:275:in `log'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/postgresql_adapter.rb:649:in `execute'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/abstract/schema_statements.rb:170:in `create_table'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:466:in `block in method_missing'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:438:in `block in say_with_time'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:438:in `say_with_time'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:458:in `method_missing'
/home/openproject/.rvm/gems/ruby-2.1.0/bundler/gems/openproject-meeting-3d144d6f8e98/db/migrate/20111605171865_aggregated_meeting_migrations.rb:22:in `block in up'
/home/openproject/openproject/db/migrate/migration_utils/migration_squasher.rb:47:in `squash'
/home/openproject/.rvm/gems/ruby-2.1.0/bundler/gems/openproject-meeting-3d144d6f8e98/db/migrate/20111605171865_aggregated_meeting_migrations.rb:21:in `up'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:410:in `block (2 levels) in migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:410:in `block in migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/abstract/connection_pool.rb:129:in `with_connection'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:389:in `migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:528:in `migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:720:in `block (2 levels) in migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:775:in `call'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:775:in `block in ddl_transaction'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/transactions.rb:208:in `transaction'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:775:in `ddl_transaction'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:719:in `block in migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:700:in `each'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:700:in `migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:570:in `up'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/migration.rb:551:in `migrate'
/home/openproject/.rvm/gems/ruby-2.1.0/gems/activerecord-3.2.17/lib/active_record/railties/databases.rake:193:in `block (2 levels) in <top (required)>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)

which basically says that the relation already exists.
Does anyone has an advice on how to resolve this error?

Thanks for any Help
Raoul