The moves you selected were not valid. Please try again.

[cuyboya]

it won't let me set moves for my pokemon!
WHY!?!

[Tim]

There's no screenshot or any information about Pok'emon/moveset.

WHY!?

[cuyboya]

here, then, is a picture of it! (http://i41.tinypic.com/1zd5ah.jpg)

[Pink Anjel]

What moves were you trying to set then?

[Marshmallow]

here, then, is a picture of it! (http://i41.tinypic.com/1zd5ah.jpg)
Haha, screenshot...Literally...

And anyways I remember this happening to me. It is most likely an error with one of your pokemon in the roster, not the moves themselves. Try and click "Rebuild Roster" and see if that works.