Error Animating

everytime i try to animate, i select a bone and move it but sometimes (most of the times...) this thing always comes up and the bones become independent from what i've animated...

You need to make a rotation key for each bone at the end of the Walk animation, then.

rotation key? never heard of it

i got that too some times and a rotation key hmm... Oo

Rotation key as in one of those little red marks on the animation slider. Just rotate each object at the end.

oh, yeah, lol, i got it now, thx anyways
i forgot you had to select all bones before modifying the rotation key