Having the same exact problem.
Been working on the same file (AE CS5 on an 8 core mac, OSX 10.6.6, 10gb ram) for several months without a problem. Now at the crucial end of project stage, getting a render failure from the render queue about halfway through. Same error message as posted above. Havent changed anything on my rig since the last time it rendered successfully.
VC optical flares, RSMB, Frischluft Lenscare are the only 3rd party plugs Im using.
Tried saving alrternate copies of the ae file to, and render to alternate drives, same result.
Anyone have any new info?
thx