Insert a Block into DWG results in - ARX Error: eDuplicate Key

[cwjean76]

As I try to insert a block into my drawing, an error is displayed that reads:

ARX Error: eDuplicate Key

then acad cancels the command, any ideas what this means and why it's doing this?

[jaberwok]

Does this (http://www.cadforum.cz/cadforum_en/qaID.asp?tip=4922) help?

[cwjean76]

Thanks alot.