I think there can be a fault in your visual boy in PC or you are not able to save it.You just have to open your menu and click "SAVE".
This is the save problem were you have to save twice to save the game, im having the same problem so i cant finish the game beacuse after Cynthia it only saves once
you cant
you do new game then save over the other game
Walk in and save the game then go in and in out
you cant it woul overight the last save data
I asked in an e-mail to a Pokemon game creator and they said you cant get out, so next time save before you go in. i know not much help is it? :-(
If you want to erase a save file on Pokemon Platinum, while in your game, try to save on the game that you are playing. If you already have a save file, it will tell you how to erase your save file. Keep checking back, and I can figure out a better way.Thanks, and enjoy!-PocketFroggys (with help of TurtwigPrinplups)
start a new game and save over it (i think)
because Pokemon chaos black is a fake Pokemon game packed with errors
You go to the menu hit save and you cant leave the site you can shrink it
you can save your new game but you will lose your other file because you can only have one file per game