If you download a corrupted or incompatible save file, you might encounter the dreaded —a glitch item that can corrupt your entire PC box. Always scan saves with a tool like PokeGen (for DS games) before loading them into your main emulator.
Generally located in the game's root installation folder under a subfolder named Windows VirtualStore (Common for older installations) If the game is installed in Program Files sacred gold save files
If you cannot find a save that fits your needs, make your own using (a universal Pokémon save editor). If you download a corrupted or incompatible save