Hi, I am facing a problem in Autocad 2005. When I open Layer Manager propeties of certain drawings the computer hangs and I have to close it from the Task Manager. Another thing to note is, when i start a new document the problem do not occur! Also, if i open the same document with another version of Autocad, the windo open normally. This problem is also faced by other colleagues of mine who use the 2005 edition Any propositions, please reply the soonest. Regards,