I have a sheet which I built about a month ago which suddenly, as of Friday night, has stopped rendering properly. A picture is worth a thousand words so: The grey (this is all on the map layer) is overwriting the other elements even though when I built the sheet everything else was in front. It stayed that way for several week, until Friday. On Friday I spent the time and effort to redo all of the graphics into their proper place. Then guess what? Yes, as soon as I left the sheet and returned: it looked like this again. It takes approximately 45 minutes to re-edit the sheet for use. Thankfully I did not have a game to run on it on Friday. But tonight, and I really can't use this as I need to switch back and forth between sheets often. Any suggestions? This shot was taken on a windows 7 machine running Chrome. I've also looked at it on my Ubuntu machine running Firefox and it is also rendering incorrectly. Two different browsers on two different operating systems are showing me the same problem. Edit: Oddly when I first logged in this evening the sheet rendered correctly. I swapped sheets and returned to find it wrong once more.