I've uploaded the logs dated as of today, within the zip file here: https://drive.google.com/file/d/18uhpgRQ1kPGLW692CdQkXe2j6fk1UDJn/view?usp=shari...
Hopefully they help. There is no error window that appears. PixelOver simply closes out completely when trying to work on creating a second animated image. The second, the static frames for the new image are dragged into PixelOver to begin the process of creating an animated image with them. Let go of the drag n drop of the files, and the application closes right at the point of releasing the mouse button to drop them in.