Attempting to migrate the Discourse database, but 20120921162512_add_meta_data_to_forum_threads.rb seems to produce the following error:
== 20120921162512 AddMetaDataToForumThreads: migrating ========================
-- execute("CREATE EXTENSION IF NOT EXISTS hstore")
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:
PG::InvalidParameterValue: ERROR: version to install must be specified
: CREATE EXTENSION IF NOT EXISTS hstore/usr/home/www/_myapp/vendor/bundle/ruby/2.2.0/gems/activerecord-4.1.10/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `async_exec'
/usr/home/www/_myapp/vendor/bundle/ruby/2.2.0/gems/activerecord-4.1.10/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `block in execute'
...