Both my wife and I have had a Zoop computer since we began diving (40 dives) and have had no problems. We were in Fiji diving the same profile as the rest of the group and both got and ER message on the computer and that locks up the computer for 48 hours. Right before mine locked up I noticed my no deco time went to zero, that was at about 35 feet. We dove no deeper than 90 feet an had come up slowly with the group. We were with the same group throughout that dive as well as the previous dives and no one else had a problem. Any ideas what happened? It was concerning enough that we took the next day off diving, but no way could I miss 2 days so the 2nd day had to dive with the computer being locked up. No bueno. I Would like to hear if this has happened to anyone else. Thanks!