268 dives on my watch, last weekend it is working fine during the dive but after surface it says saving and never finishes had to power off, tried 3 more times while instructing, same every time when I plug into the computer there is no dive data for those dives. Yes I let it go for a while after the 4th dive I left it saving for almost 4 hours it was still circling the icon and said saving. Has anyone had this issue, it has become unusable as I need the data for my students (yes I do have a backup)