@valyasokol, In the source I see the thumbnails addresses but, just to be sure, in Manage Gallery have you checked if the preview image is selected and if the selected image currently exist?
Example: /wp-content/gallery/precise-faculty/dynamic/precise_1_2010-nggid03110-ngg0dyn-91×68-00f0w010c011r110f110r010t010.jpg
Do you have this image on the server at that path?
@valyasokol – @tizz has a good suggestion but also check the file/folder permissions of the gallery folders as the gallery preview images used by the album appear to be resolving to a 403 error.
– Cais.
Thanks, tizz and Cais. The combination of your answers resolved the problem. Tizz pointed me to the place where to look for the correct permissions. Somehow the permissions are not inherrited now, so I put all directories to 755 and all images to 644 manualy, but dynamic folders were not there at that point. Now I checked – the thumbnail images were their, but they had wrong permission. I fixed this.
My last question – is “non-inheritance” of permissions the problem of updated plug-in? We checked the folders in Linux, they should inherit correctly, yet they didn’t.
Can you also explain why I point to the image precise_1_2010.jpg for gallery preview, but a different image is created at /wp-content/gallery/precise-faculty/dynamic/precise_1_2010-nggid03110-ngg0dyn-91×68-00f0w010c011r110f110r010t010.jpg?
Can you also explain why I point to the image precise_1_2010.jpg for gallery preview, but a different image is created at /wp-content/gallery/precise-faculty/dynamic/precise_1_2010-nggid03110-ngg0dyn-91×68-00f0w010c011r110f110r010t010.jpg?
Because 91×68 image is a dynamic image created for the album display, depending on the size in the settings.
The /wp-content/gallery/precise-faculty/thumbs/thumbs_precise_1_2010.jpg instead is the thumbnail (120×100) created for the gallery, depending on the settings too.
