When I zoom in to see details in my layout, bunches of pale images of something like a small shrub appear at random in places where I have never put them. The same thing happens when I run consists - these images place themselves anywhere includung superimposing themselves on locos etc. I'm running Windows 7, 64 bit, with an i7 and decent graphics plus 8G of RAM. This is driving me nuts. They don't respond to anything I can do like copy etc. Can someone please save my sanity???