This is an update to a 2006 Tech Note:

http://www.webworks.com/Support/ePublisher/Legacy_Docs/Tech_Notes/Adobe_FrameMaker/EX_ePub9_Cannot_Duplicate_Error.shtml

ePublisher uses FrameMaker plug-ins; it does not modify the maker.ini file. Do not add entries for ePublisher's plug-in to the maker.ini file because it causes errors.