Hi, if you still have the problem with duplicating objects on 10.2, it would help us if you could send us your carrara.ini file. You should try deleting your carrara.ini (make a copy of it first), it might help. Otherwise some people have mentionned that reinstalling carrara and then the patch seems to fix the problem. In any case, if you could send us your carrara.ini at charles@eovia.com , it might help fix this weird problem. Thanks Charles