Decided to post this in case someone else runs into this mistake (took me a few minutes to figure out).
Under the SequenceServer FAQ, there is an entry entitled:
How do I tell SequenceServer to read a different configuration file?
For Rack deployment, one needs to add:
SequenceServer::App.config_file = ‘configuration_file’
While this works, the placement of this line in the file is important for SequenceServer to it. So, your config.ru should look like so:
SequenceServer::App.config_file = ‘/absolute/path/to/configuration_file’
I blindly added the line to the end of config.ru and SequenceServer would error out at start-up due to not finding the configuration file. When I looked at config.ru a little more closely, I realized the configuration file location needed to specified prior to initiating the application.
Hope this helps someone in the future.