Bone Sticks in all Frames Need Help

[sunshinex3]

I'm new to modeling, I rigged this flood Juggernaut but i don't know what i did wrong, the legs stick in all frames when I try to animate.

FloodJuggernautNo Animaitons 04 is the one i rigged but I don't know what i did Wrong to make the legs constant in all frames when I'm Trying to animate it.

FloodJuggernaut No Bones is a clean copy with no bones

Plz help this was to be my first contribution(mdl wise) to the hive.

 

[sunshinex3]

had to restart, the is a bug with mld vis.

all you can do is save as a new version after every animation you make