Only 1 sample loaded when I load 15 to a file

So I created some samples. They're all wav Files and when I convert these samples from my laptop to the mpc only one sample seems to make it to the loading samples file on my mpc. I tried several things and when I go to "delete sample" the one sample in the loading file changes to another sample I converted. I guess that's a sign but I still am having difficulty. So I loaded around 15 samples and 1 is only listed in the loading samples screen. any ideas?

Have you tried to change their names?

Best to load those samples to a cf card with the files at [email protected] wave. Then insert into the 500 to read them. Name them with numerals and alphabetical letters, symbols will cause errors when loading.