After a crash while modelling on ScketchUp+OS, I opened last saved file.(I had 5 old files more as backup of my week's job). I checked before starting and It was OK then. However, despite of the file is not empty whatsoever, it doesn't appear anything at all on screen. The Diagnostic says there are objects, surfaces and all stuff that used to be there, but I cannot see anything on SketchUp window, just the old guy. But the funniest is that the old files, saved during all week, once opened, do not show anything about thermal zones, materials, etc. Just geometry. Files have still the same Kb that they used to have, but I looks there's much less information now. I reinstall ScketchUp without success. I tried to import, instead of open through OS, and all diagnostics say there's no problem at all. No error banner either. Must I assume that I lost most of my job of last week? Thanks in advance