I've done 4 runs so far with this route and everything went smoothly. On the last one I did I encountered this though, It triggers at the final step of the glitch using the coin case. Now I only get this invalid opcode window when Kenya is in the third slot, so I thought it's just a bad Kenya. None of the other pokemon work though and after checking 3 times I can confirm that the boxes are correct. This is on bgb.