I'm going to assume you only have one controller, and it's saying error on controller 16 because the dip switches are set that way. I would refer to the manual and make sure you set the controller as the first one, per the dip switch positions.
Looks like you have four fans hooked up to the controller and not a fifth fan or LED strip. I believe you are seeing the error message because by default, the controllers assume a device is hooked up to each port. You should go into the Thermaltake RGB software and find the device that corresponds to your empty port on the controller and unassign it.