I thought you might be interested in looking at 'Files are not signed by a key...' Error after installing BAF and PMC DLC.
https://forums.dayz.com/topic/55300-files-are-not-signed-by-a-key-error-after-installing-baf-and-pmc-dlc/?do=findComment&comment=805468
× Pasted as rich text. Restore formatting
Only 75 emoji are allowed.
× Your link has been automatically embedded. Display as a link instead
× Your previous content has been restored. Clear editor
× You cannot paste images directly. Upload or insert images from URL.