i keep getting a "bad checksum error" in snes9x

[uselessearthboundfan]

so recently, I decided I would try out an earthbound Romack that Romack being the "earthbound enhanced" rom.
I patched a pre-existing earthbound rom and expected it would work just fine. however when I loaded the patched rom it kept giving me a "bad checksum error" I have no idea how to fix this and google isn't helping me at the moment. so I'm asking here. if anyone could help me I would greatly appreciate it.

[KingMike]

ROM hacks usually don't fix the checksum. If the game plays, don't worry about it.

[Nintenja]

so recently, I decided I would try out an earthbound Romack that Romack being the "earthbound enhanced" rom.
I patched a pre-existing earthbound rom and expected it would work just fine. however when I loaded the patched rom it kept giving me a "bad checksum error" I have no idea how to fix this and google isn't helping me at the moment. so I'm asking here. if anyone could help me I would greatly appreciate it.

Rematch with rom patcher js and  click option to correct checksum