I have an oceanic veo 250, navcon, and I really like it, over 20 dives on it so far. I always download my dives, and it works flawlessly every time thus far. The other day, I cleared it out, to erase all other dives and start anew, and it worked well. Then I did 4 dives each about 35-40mins, with a Sampling Rate of 2secs. When I went to download my dives, only 2,3,and 4 showed up as dives available for download. Dive 1 wasn't even there...not grayed out or anything..just missing. I can see the dive info on the PDC, it just won't show up on the computer. I'm using the latest oceanic dive software. Any ideas?