Matt
The reason your getting this error message is due to the fact that you've pasted the action on the time line, not on a button. Check your time line action. The tiny 'a's. Other than that it could be your button is not a button but a graphic symbol. In fact looking at the error again this would seem to be the case. You have a symbol named 'drinks_menu', on the 'submit' layer, at frame 86, with the action attached , but it's NOT a button.

Let me know how you get on.

Egg