This is the #1 issue. Your game might look like Kingdom Hearts II, but it could be a different revision.
Copy 304c115c.pnach directly into the cheats folder. Do not put it inside subfolders. 304c115c.pnach
Between versions 1.6 and 1.7 (Nightly), the cheat engine changed. Some old 304c115c.pnach files use syntax like // for comments or extended incorrectly. Update to the latest nightly build and ensure your patch uses modern syntax. This is the #1 issue