This was with “Use Adobe DNG SDK for export” enabled.
When I disable the setting, there is an error message in Lightroom, saying “Failed to import processed photo. Processed photo may be from an unsupported camera or malformatted file:
/Users/oliverstoer/Pictures/2024/03/02/P1012061-2.dng”
The Om-1 MKII issue was resolved in the most recent update
Please make sure you’ve also turned off any firewall, VPN, or proxy that may be on your computer. These are known to block the installation. Also, make sure there are no settings or configurations in your OS system that could interfere.
Try using the appropriate OS system link to update: