**System Information**
Windows 7 64bit
NVidia GTX 570 x2
**Blender Version**
Broken: 2.7 build e8c63ca
Worked: 2.70a
**Short description of error**
Uncontrolled flickering during render. Note: when using the Vector Blur node, the objects blur as if they're moving, but they have no animation.
{F94143}
A second issue that may be related: occasionally when grabbing a bone it will suddenly jump elsewhere (its rest pose?). I have to right-click to drop it and move the timeline so it returns to its keyed position, then grab and move it again. I say this may be related because the "flickering" models appear to be repositioning themselves somewhere else.
Also, I created proxies (ctl-alt-p) for the cookie models. Then when I grab one, all move. I haven't linked many models, but this was unexpected behavior. I undid the proxying. Note: this did not change the flickering behavior.
I apologize if these are, in fact, separate bugs.
**Exact steps for others to reproduce the error**
I merely linked a few models into a scene. All, except one flickers at render time. Those models that flicker are those I duplicated (shift-D) and one I made a proxy for so I have access to the rig for animation. The linked model that doesn't flicker is one that is merely linked, no duplication, no proxy.
I've attached a packed .blend file.
{F94146}