Users on older versions of the game will also not be able to trade to users on 1.2.5. Your saves are unaffected by any of this. I highly advise using the new core folder when running the game, as some files were renamed/changed/added in order to address a few bugs.
Though this is labeled as a patch, much more was changed here than you would expect from a patch but not quite enough to be labeled as a complete update.I know that some of you don’t want to read anything and just jump into the download, but before doing so please keep in mind the following: