What was the Post Installation Instructions given?
Error 512 means the Data Definition at Application level and at the DB level differs... You can do Convert to runtime for the given package Combination, which is giving error and try again.
Else do Create Runtime for the given Package Combination once again.
Theorotically i never understood why Reconfig should give 512 Error. It is supposed to Dump Old Definition and create table according to new Defintion and reload data into it again..Why shoould it bother if Both version varies? They are supposed to be different..