Red eye correction generating strange grid pattern in viewer

Hi everyone,

For the last week Aperture 3.5.1 has been adding a strange grid with a repeating pattern in my images when I edit them in the viewer. Here is a screenshot:

The strange pattern is near the top right and appears to be of my son's eye. The pattern appears in multiple images and always seems to be one of the eyes of the subject! It occurs when I use the red eye correction.

If I toggle off certain adjustments, not just the red-eye adjustment, the pattern goes away. However, once I turn on certain adjustments the pattern returns or moves to another part of the screen! If I do turn off red eye correction the grid goes away.

So let me summarize here:

If I use red eye correction and I use ANY other adjustments then I will get the strange eye grid.

It appears if I don't use the red eye correction the eye grid does not appear.

I have tried repairing permissions, repairing the library, rebuilding the database, and reinstalling Aperture. I've also tried moving the library to another mac and I can replicate the issue on that mac as well, however, not as often? I also downloaded memtest and ran it on my mac and it said all my ram is fine. I have also tried shortening my library and I can duplicate the issue in a small library with few pictures.

I'd really like to use the red eye correction without the strange grid! When I export the images the grid does not appear.

I am using a Mac Pro mid 2010 with 14 gig of memory. The second machine I tried is a macbook pro laptop using 8 gig. I'm really at a loss here. Please help! Thanks again 🙂