left over image from deleted object

Right click on them and "delete objects"

Ok, I know this problem cos sometimes you just can't seem to grab and delete an object from the desktop and I know the answer - and its even better than the ever delightful China Cats . In DesktopX Edit mode 'List Objects' which will give you a complete list of the DX objects on your desktop - So go down the 'Object ID' list in the left hand column until you identify the offending object then just right click and delete.

You can avoid that by dragging that blue box around the object you want to delete first and then deleting it.
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Good tip there goodmorphing - just checked it out on one that I always have to use the list approach to clear, and it works a treat