The Developer page provides a few checkboxes that can help debug issues with KStars. There are checkboxes for saving images in logging directories that might help debug issues. Of course, saving images can take up disk space and should be used judiciously.
The images that can be saved are
all focus images,
all guider images,
all align images, and
align images where the plate-solving failed.
The images are all saved in folders parallel to the main logging directory. They are in folders named guide, autofocus, align, and align/failed.