The carriage can’t pick up the feeders when they are placed too far to the left or right of the needle bed. Before starting your program, move all feeders that your program will use to the area between the clamp and the needle bed. It is recommended to leave the unused feeders all the way to the left or right, so they are not in the way of the feeders that are working.
WARNING: Never place a feeder over the needle bed. This can cause a collision between the needles and the feeder, potentially damaging both.