When I resave it in PokeSav, I dont have any save corruptions. I even beated Dahlia of the Battle Frontier and have a 30 hours of game play. I heard some people has save corruption at the beginning of the game.
just use pokesave english platinum and do whatever you want - edit pokemon, hack items - and save it or save as.
I recommend use the advanced savlib and infolib if you want to export it to a retail pokemon platinum