After moving my WordPress installation to a new hosting, some of my images stopped showing. It affected only images with polish diacritic letters in the name of the file (the guys on polish forum didn't help me unfortunately). I saw, using Total Commander, that polish letters changed to some other letters. I renamed the files back to their proper names, but images still don't show.
If I upload the image once again, it works (still with polish lettrs in the name).I don't even have to insert the image, just upload it to the gallery.
However, such a solution isn't good for me,as I have a lot of images across my site.
Here is one of the pages with both working and not working images:
I am 100% sure that files are in the proper folders and have correct names.