Post #2559901

If these fonts are imported into Typeface app, or any other font manager, I’d recommend to (temporarily) move the old fonts into a separate folder that is not accessed by the manager. To do that choose View › as List in Finder, which seems to prevent the kernel panic when selecting the font files. Or use Terminal to move the affected files. It appears that the kernel panic may be related to Resource Forks on external disks and accessing files located on the internal disk may be fine, but more investigation is necessary to confirm.