I was teaching in the pool with my Aeris A300CS. The battery was low, but I started the dive with it anyway. I turned it on when I was in the water, it came on, stayed on for a few seconds and then shut down. It came back on briefly a few minutes later and ever since, I get the "error last dive" message. The compartment didn't flood, it is in really good shape, and I don't really think there is anything wrong with it other than the fact that I'm completely locked out. I tried leaving the battery out for 30 minutes and then putting it back in. Same thing. Is there anything I can do that doesn't require me to ship this thing out and pay for someone to run diagnostics? If that is the answer, then I may be done with AUP dive computers.