Thanks, Brent. I'm on a PC with 3.1. And you're right; it's an option to import the sequence. That said, though, the problem appears in sequenced .psd files. It's in the original render from RayDream. Even if I step through the animation one frame at a time in RDS, it shimmers like a Phoenix street in August heat. (Or October heat, for that matter -- it's hot as hell here.) I'm trying a render at a whopping double size right now (1480 x 960 x 30FPS) to see if a gaus blur and a reduction to 720 x 480 will fix the problem.... Next test will be to build the model with practical windows -- maybe it's the shaders dancing around.... Otherwise, I may be needing to jump to Max or something....