Suddenly, starting yesterday, when I Ctrl+S to save my work on a scene that includes a column of MP4 video, the error message pops up "Failed to save the following resources: name.MP4." - But - it's a false alarm. When this started happening, I went to "OpenToonz stuff" in my C drive. I would check the elements of the scene in question, and every time I've checked after seeing the error message, the MP4 in question is right there in the folder where it belongs.
All of these scene projects that include video and have been getting that error message open up fine, the videos aren't missing or damaged.
So - it looks like it's just an error message glitch. But I'm curious if other people have ever encountered this?
RB