Module building but not loading on flight controller

I have several custom modules I am making that are derivative of mc modules, i.e. mc_att_control was copy pasted and turned into custom_att_control. I’ve done this with several modules and they all work fine.

I have a copy of mc_rate_control, now custom_rate_control, and it will build, but it will not start once on my Durandal. If I type custom_rate_control in the mavlink console, it shows “nsh: command not found”. The module builds just fine and I have ruled out parameter conflicts. There is no clear indicator on the nearly stock code in the module that would cause it to not work.

Is there a way I can better debug why this module will not start?