Simulation error: Unexpected device. Please check motion controller integrity in mfg cell

Hello,

Received this unfamiliar error during a 5-axis NC machining simulation. Nothing seems unusual about the motion controller as stated in the error. Not sure what/where to troubleshoot. The NC machine is reserved and has been used many times in the past. Hoping someone has encountered this error and can offer any guidance. Unfortunately I am not at liberty to share the file or certain photos. Please let me know if any additional info is needed. Thank you.