I think this is because it is animated using skelital animation Rather than Hierarchical animation.
Skelital animation is when you make a skeliton, much like a human skeliton with joints and bones, and then stick it to your model and then animate it and the model "bends" to move with the skeliton much like our skin does.
Hierarchical animation is when you have a different mesh for each limb, e.g one for the arm, one for the foot. you then group them together so they are still counted as one object but each bit can be accessed individualy. You then move each limb on its own.
Unfortunatly darkbasic classic cannot animate skelital animation

that, i think, is why it is not working.
I have added some images to explain as well.
Hope this helps,,,
codeeater