Thanks for your reply doh123. Indeed I probably don't use normal Wine. I tried to type your code and the reply was: '.wine does not exist' Actually I downloaded an application called WineBottler http://winebottler.kronenberg.org Instead of a hidden folder I just have a normal folder called 'Wine Files' in which I can find the Windows arborescence. I tried to remove the sketchup folder from that but apparently it doesn't desinstall it, so I put in back there at the moment.