Problems loading samples onto mpc2500 os 1.24

Hi, i recently got an mpc2500, but im getting problems when i load wav samples. I keep getting a message that says wrong file when i try and play some wav files. Works with some not with others, doesnt seem to be any logic to which ones work and which dont. Any ideas? Cheers

Worked it out. The Sample rate was 24 bit. jumped the gun a bit there. Thanks