Does anyone encountered this problem? I have a Cad file which sent to me by my friend. When i open the file its automatically changed the default of my Cad setting. The pickbox has been drag to a maximum size, the aperture size has been drag to a maximum size as well and the cross hair has been rotated into 330 degrees. Every time i open my Cad the settings is always like this. Please see the attached screen shot. But before i open the file i scan it first with my Norton anti virus and its clean. Is anyone here can help?