I was testing a system today with four Crestron 1 Beyond IV-CAM-I12-B cameras, and CP4n using the 1Beyond AutoTracker_IV-CAMA3 module.  It appears to control the cameras but I did notice an error log entry in the processor about an exception at Line 522 in the SIMPL+ module.  Sorry I didn't have time to research it further. . . 

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Doug G