I think there is a bug with the paste menu. When pasting objects using the menu, some of the options are greyed out some of the time with no real explanation for it. There is a long thread explaining the issue so please read it.
I propose that this issue needs to be fixed.
Forums Thread
http://forums.autodesk.com/t5/autocad-lt-forum/paste-doesn-t-work-all-the-time/td-p/3155760
Regards,
Jeremy
Can't find what you're looking for? Ask the community or share your knowledge.