One final update.... I restored back to OS 10.11. Then upgraded to MacOS 10.12. Did all the OS updates, etc.... At least I still have access to old FCP7 files now. But CC2018 is still behaving the same way. Most media files from the same shoot and the same camera import just fine, but some won't import using any app in CC2018. (AE and AME). If I wait long enough, they appear in the browser as VERY LONG audio only files. So I installed AME 2017... reads all media files just fine. So for me, it's still an issue. I have no issues with anything shot with my Sony FS5, just my various DJI cameras on an OSMO, an X5 and an Inspire. My workaround is to re-encode all my DJI footage using AME 2017. A pain but workable. If I try to open an old project from PP 2017 in Premiere 2018, I get the unlinked media warning and the clips turn red in the timeline.
... View more