I notice that a model that looks fine in a neutral pose (left) will sometimes pucker when I actuate the bones more than a little bit (right, white circles). Is there any way around this, or is that just a limitation of bones in general?

Thanks.

This could be improved when multiple bones per vertex are implemented. Untill then, you could try to move the knee joint forward a little, but then the movement may look unnatural..

Ahh. Thank you.

Also adding a few more tris may help, if that solution is viable.

you could do it right in MAYA or so and export it as vertex animation

Either of those solutions might work.

I suppose a third might be to implement a more intricate animation system (after all, it's possible to get and set individual vertices).

Just curious... but was that model made entirely in Med? I know this is off subject, but I'm just wondering.

Naw; probably Maya or Max. It's available here:
http://www.cubixstudio.com/

Oh... you're not the original author of it. My bad. I was just curious because a friend of mine is trying to learn how to create models for our game with Med, but he's struggling with it. I've been debating whether Med is friendly enough and powerful enough to do the job. I just figured that if that model was entirely Med's creation than Med must be pretty versatile. Her face is absolutely beautiful. Thanks anyways

I would change it from bones to vertex animation and then correct the vertices where there are puckers.

(First making sure that frame range is unchecked in options.)