I actually am using WED, I misread that thing about attaching actions to entities and thought it was something I had missed in MED. So far, my code remains exactly the same as it does in the previous page, except for that instead of "99" it has "ANM_CYCLE".
As this whole excercise is just a test to see if I can make a model move in some way, would it be best if I just used a completely different model with a completely different action? This way I may be able to pinpoint exactly where I went wrong. Also, it may be as one other poster said, it may be causing errors for seemingly random reasons (or I missed some small step in the procedure).