deleted photo in ftp but not in gallery

[renderfield]

Hi,

I recently deleted photos from my gallery by my ftp. However, in my gallery it shows this boxes with the photo's title that got deleted. Does it has to do with the photo permission or something else? How can I fix this?

Here is a preview, if I didn't explain that well.
(https://coppermine-gallery.com/forum/proxy.php?request=http%3A%2F%2Fwww.wrhona.sillee.net%2Fimages%2Fcop.jpg&hash=a6d1fadea9ab3eddda5b6d9197edf9e671f69d69)

thanks for the help.

[Nibbler]

Delete files through Coppermine's interface, not via FTP.

[renderfield]

I can't delete them there either. It says that the files are not writable...

[renderfield]

I solved it.
First, I went to 'Categories' and deleted the non-existing categories. If albums are created under that category, normally they would appear on the front page of the gallery. Then, I clicked on the album properties and at the very bottom under reset album, I clicked on 'Irreversibly delete all files from ....' . All files were deleted and I finally got to delete the album.