When putting the images and world folder in a server, the images aren't loaded!

[resprune]

For hours, I have been trying to fix this. I put all images in the images folder, all files in the maps folder, etc. But the France World folder when I load it in, when I go in the server, they show as Vanilla maps (there are some exceptions)! How do I make all maps load in correctly?

Please somebody reply ASAP if possible.