Issue when exporting as an .mov file.

So I'm working on an animation. It's a large animated banner 4128px by 72px. I built the animation everything was fine, I was able to export no trouble. I also need to build the banner in other sizes. I built the next size down 3503px by 72px, but when I went to export I got a failed to render in Media Encoder message. I built the file the exact same way as the larger file, same export settings and everything. I tried all the classic tricks, restarting, uninstalling and reinstalling Animate (with and without previous presets). I also tried taking the file that is exporting fine, copying it and just resizing the stage (4128x72 to 3503x72) and then it wouldn't export. Then I changed it back and it exported again. Also for context, I had already built an even larger version that was 4895x72 that also exported fine. So all I can see is that I'm having an export issue below a certain pixel width. Is that something that happens? Any help or advice would be greatly appreciated. I attached the error message from Media Encoder for reference.