IntCPU: Unknown instruction

[TheVigilantWolf]

I get this error when attempting to run Animal C. CF

IntCPU: Unknown instruction 00001010 at PC = 8000239c last_PC = 8132ffc8 LR = 800924ac

I've tried running the thing from two different sources and both give this error.

Not a techy guy so need help here.

[TheVigilantWolf]

Update: The error stopped when I disabled cheats, but what if I want to use my gecko codes, how can I repair this?