Just replaced a well used GP1850, with a new GP1971, with a BW285 transducer and new C-Map 4D chart.  Contacted C-Map, chart is most current with files dated 11/18/21.  Upon power up, I get the attached error message.  Just received everything brand new in mid December and guess where C-Map sent me, lol.  Thanks in advance, Brian.
	
