At this point, the only suggestion that I can make is to reinstall 10.6. I have run Archive and Install with 10.5 but it appears to be a bit different in 10.6 (and I have never done it). Still, according to that link, you should be able to do the equivalent and keep your files, folders and settings. The instructions for A&I apply to 10.5 as well as previous OS versions.


Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365