Some people had issues with the game if they used an unheadered ROM. Try patching with a headered ROM, or clicking the "add header" option using the ROMhacking.net patcher: https://www.romhacking.net/patch/
Hi, I'm seeing that there are some issues with the patch-as-is. It was originally made a number of years ago, so I wonder if there are compatibility issues with newer emulators versions that are more accurate.
I'm going to look at this through the week, make a new patch, then add some detailed instructions to this page.