For the benefit of others who may come across this topic: WIndows update has been quietly bundling the plays.tv app along with an update to the drivers for AMD graphics (most likely AMD initiated this, as plays.tv is a project they co-sponsor with Raptr). This app causes graphics conflicts that crash SketchUp. Uninstalling Play TV has cured the problem for many people.

😎 no hard feelings modelhead, but i had a hard work week and next weeks will be the same, not even had time to my other passion, modeling cars. When I finished the church will be posted in 3d warehouse, ok?
and once again, thanks for your help.