kmw; 'Mover' is the actual, basic animation system built into the Vue application. Mover 5 (as it is called now) is an add-on that extends the functionality of Vue to allow import of full Poser animations (and with Mover 5, that includes the dynamic cloth and hair, if you have Poser 5). The Mover add-on also enables the RenderCow system, which allows you to set up a 5 node renderfarm. It is possible to do animation without Mover 5; it would be quite slow, and involve importing each frame, rendering a still, and composting them into an animation in something like Quicktime (for the web) or Premiere (for those who have access). Mover 5 does add some functions, and extra automation to the existing basic functions. Poser animations can crash Vue easily, this much is true, but in most cases I've encountered, it tends to be a matter of resources....or running out of them. The high resolution textures gobble RAM like no one's business (I have V2 textures that approach 20 megs...and that is just the body. Add the face tex, which can tip the scale at 8megs, the mesh, and then add all the joint parameter shift info for the actual animation. I've got 300 frame PZ3's that tip the scale at close to 100 megs. And that is only 1 nude figure with no hair). If you are serious about animating with Vue and Poser, get Mover 5. And start offering to take those old, decrepit computers off your friends hands for nothing. You don't need state of the art for a hobbyist rendergarden, and old P-2's will do just fine....