I get this message when adding some png images. Haven’t seen it before the latest version. What can this mean? The image is added, but whenever I open the image I get it.
Maybe it was in some way damaged? Try to open it in GIMP and save again in new file. Then import it.
Yeah, it looks like it was a GIMP-related issue. In the Preferences I had deleted the “Created with GIMP” text, but when I saved the file Add comment-option was checked. Sorry about that 