OK, så here is the fits header of an image that is NOT recognized by VPhot as being plate solved (attached). I can not decode if there is WCS-info in that or not - is there?
I always do alignment, either manually or via Scheduler. I typically slew to a new target, align, take a few images, then slew to another and repeat the process. So there should in principle be WCS information in all images. Right?