Maybe the address is different between the regular and greatest hits version, which has extra content.
Edit: BTW has anyone gotten nemesis's Dark Cloud elf hack working? I'm especially curious about NTSC-J or PAL, because I found a very similar value (0000BF7F 803F023C 00608244 xx) but changing it does nothing. In fact I changed every instance of 803F023C 00608244 but no widescreen. I'm wondering if it's something entirely different for non NTSC-U versions
Edit: BTW has anyone gotten nemesis's Dark Cloud elf hack working? I'm especially curious about NTSC-J or PAL, because I found a very similar value (0000BF7F 803F023C 00608244 xx) but changing it does nothing. In fact I changed every instance of 803F023C 00608244 but no widescreen. I'm wondering if it's something entirely different for non NTSC-U versions