Problem with Preview saving a psd file

I have a 90 MB TIFF image from a scanned photo that opens fine with Preview. I can save as TIFF or JPG just fine, but if I "save as" with the "Photoshop" format, the image ends up with a large grey rectangle running up the left side of the image. Oddly, the information is still there: if I open the psd file, and "save as" any other format, the photo is restored.

Anyone have an idea what's going on here?

Attached Images

problem.jpg (652.8 KB, 2 views)