http://www.zwsoft.com/forum/viewthread.php?tid=1683 If I start a new drawing in ZWcad2011beta I can manipulate the UCS icon using the UCS icon properties, they all work correctly I can move, place, twist and change size etc. If the icon position goes out of view it will reappear at a neutral screen location, thats good. I can import some objects from AutoCad2010 to the drawing and all remains functioning but once I import a large complex file from Acad2010 the icon disappears and connot be made to reappear on screen using any of the functions that previously worked on the less complex drawings. The same happens for drawings from Acad2004. boyanderibeev 2010-12-02 09:25:17