Reverse clip export shows INVALID

Hi everybody. I updated my ShotCut to version 26.9.27. Recently, I tried to reverse a video section, and add it to a video that I was editing. Everything looked ok, but when I exported the finished video, it showed “INVALID” in the place where the edited reversed video section was..

Can someone help me? Thanks!

Carlos

Usually INVALID means the video got moved, renamed or deleted.
Does it work correctly in the timeline when playing?

Not due to anew version. Save the project, restart, and open the project. It might ask you to locate a missing file.