Doing further research, it was indeed a LaTeX error occurring when JPEG images (or in my case PDFs including JPEGs) were used, but a recent MiKTeX update fixed it. I advise anyone using MiKTeX, therefore, to run MiKTeX update as soon as possible. Still, the error seems not to affect the final result at all.Johannes_B wrote:I have never seen this before. It seems to be something your editor is giving you, it is not a LaYeX error.
Can you show a minimal working example that reproduces this message along with a screenshot?
More details about the bug can be found here: https://sourceforge.net/p/miktex/bugs/2605/