Hello,
I am using Photo Mechanic Version 4.5.3.1 on a Mac OS X with 768 MB DDR SDRAM memory. Whenever I try to update the IPTC info for some images, I get an error message that reads: Unable to Save IPTC info. The images are saved as jpegs and are being processed and sent to us through Lightroom and Fetch. Is it possible that the images are being locked during the transaction from Lightroom to Photo Mechanic? When the photographer re-sends the images as Tiffs, I am able to updated the info, but when I save them as jpegs, they become locked.