SQLite3::SQLException (cannot start a transaction within a transaction):
    /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/errors.rb:94:in `
check'

...


Rendering ./script/../config/../vendor/rails/actionpack/lib/action_controller/te
mplates/rescues/layout.rhtml (500 Internal Error)
cannot start a transaction within a transaction
/usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/errors.rb:94:in `chec
k'

...

SQLite3::BusyException (database is locked):
    /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/lib/sqlite3/errors.rb:94:in `
check'