Seeding with a custom seeder and custom database.

I have two databases and therefore have a subfolder in migrations and seeds for the second database. For seeds i have a dashboard/DashboardSeeder.php under seeds that acts as the DatabaseSeeder root seed class for the second database. However, when i try to populate, I receive the following error:

$ php artisan migrate db:seed --class="dashboard/DashboardSeeder" --database="mysql2"

  [RuntimeException]
  Too many arguments.

It seems no matter where I put the DashboardSeeder or the Seeder, whether in seeds or seeds/dashboard, it runs, or referring to the seeder by itself, I always receive this error. I don't think it likes having a custom class and custom database. Here's the -v errors:

Exception trace:
 () at /home/vagrant/Code/Appy/vendor/symfony/console/Input/ArgvInput.php:177
 Symfony\Component\Console\Input\ArgvInput->parseArgument() at /home/vagrant/Code/Appy/vendor/symfony/console/Input/ArgvInput.php:86
 Symfony\Component\Console\Input\ArgvInput->parse() at /home/vagrant/Code/Appy/vendor/symfony/console/Input/Input.php:61
 Symfony\Component\Console\Input\Input->bind() at /home/vagrant/Code/Appy/vendor/symfony/console/Command/Command.php:221
 Symfony\Component\Console\Command\Command->run() at /home/vagrant/Code/Appy/vendor/laravel/framework/src/Illuminate/Console/Command.php:136
 Illuminate\Console\Command->run() at /home/vagrant/Code/Appy/vendor/symfony/console/Application.php:838
 Symfony\Component\Console\Application->doRunCommand() at /home/vagrant/Code/Appy/vendor/symfony/console/Application.php:189
 Symfony\Component\Console\Application->doRun() at /home/vagrant/Code/Appy/vendor/symfony/console/Application.php:120
 Symfony\Component\Console\Application->run() at /home/vagrant/Code/Appy/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php:107
 Illuminate\Foundation\Console\Kernel->handle() at /home/vagrant/Code/Appy/artisan:36

Any info/tips are appreciated. Thanks!