How to fix the Legend of Zelda: Spirit Tracks (Not the train)?

Ok so I downloaded the ROM and I patched it. But right when its about to save to create a new file its says, " Date could not be written. Turn the power off, then reinsert the game card." Can somebody please tell me how to fix this?

What are you using to play the game (flashcart/emulator) ? Read the Common Issues https://www.romulation.org/forum/index.php?topic=1462.0

Im using an Edge flash card

See if you're using the latest firmware. http://linfoxdomain.com/ds/ I believe you'll need to use a save-file, a few have been posted in this thread. https://www.romulation.org/forum/index.php?topic=28754.0 Keep all your queries there now.