Pro 18 Build 527
" Warning: Error occurred while loading the project file...
The proper stream could not be found in the media file."
When I open "Details" it lists some files as...
"...has changed enough that the media stream properties from the project file could not be applied. Default media stream properties were used."
The project loads, but now about of half of the MP4 clips (out of dozens) wont play video. This project loaded fine many times in the past. All the MP4 clips were created from the same app. Now, some play video, and some dont. The audio portion of all clips still play. The problem clips also play fine in other apps, so they are not corrupt.