The last sensor I used (I am now waiting for the receiver to charge now), I got an Error 1. It appeared after a HUGE difference between the BG reading and the CGM reading (the CGM read 300+ and I actually had a BG of 92 or so).
I let an hour pass (as the manual says) and entered another BG. I had to wait at least two more hours until the unit went back to working normally.
Anyone else seen this behavior?