iMovie 10.1.12 "This item cannot be shared while it is still referencing media on the camera."
iMovie 10.1.12 will not let me share an edited movie because "This item cannot be shared while it is still referencing media on the camera." Some clips have a camera icon in the lower right corner, even though they were already imported from an SD card.
Even when I try to import clips from the same SD card, iMovie shows them all as already having been imported and won't re-import them.
Help!
iMac 27" 5K, macOS 10.14