Thank you very much.
Looking forward to have good news from you! 

So, if you choose stream to see the thumbnails you will see no picture, for instance:
https://fotometeo.ame-web.org/thumbnails.php?album=4220

Thanks for the link. I took a look at your site and the pictures are brilliant. Where the stream works the pictures look great in stream format, for example on this link:
https://fotometeo.ame-web.org/thumbnails.php?thumb_mode=stream&album=690&page=1&cat=-690

Unfortunately, I've not used keywords in that way in my gallery and the current version of stream doesn't support them. I will see what I can do to support keywords in the next release of stream, hopefully in the next few weeks.

Thanks for your quick reply.
I'm glad to know you are wokimg on a revised version
I'll try to explain much better:
In my gallery users are allowed to upload pictures only to their personal albums, and then their pictures are are linked by the admins to the corresponding public albums through the keywords. So if you visit my gallery and go to any of the public albums you will find at the main index, they contain only linked files. So, if you choose stream to see the thumbnails you will see no picture, for instance:
https://fotometeo.ame-web.org/thumbnails.php?album=4220

Hello!
Great plugin, but in my case it's not wothful, as pblic albums contain linked files, and they do not appear when you choose stream display

I'm working on a revised version of the plugin which will cope with various types of file and may be able to include a fix to what you've described but I'll need a little more information to understand the circumstances. Can you say what type of file it is or, if it is a gallery that's open to the public, give me a link to a standard thumbnail page that shows the linked files.

Hello!
Great plugin, but in my case it's not wothful, as pblic albums contain linked files, and they do not appear when you choose stream display
I suppose there is not any solution for this 

Hallo,
nach einer Optimierung der Tabellen in der Datenbank, sah ich bei einer Tabelle einer Warnmeldung und wüsste gern, was sie bedeutet.
Danke und Gruß, Volker

Thanks for your comments, droneguy. Am pleased that you like the plugin. I only developed it to support images but it shouldn't crash with other files. I'm working on an update for other reasons so will investigate the crash you saw and release a version that fixes the problem.

This plug-in really is great, but - it seems it can't handle a non-image file in the gallery.  I added an MP4 file and it causes the stream display to crash.  It crashes because when trying to retrieve the EXIF data to check for orientation the exif function fails and doesn't return an array.  Also, although the next problem doesn't cause a crash it's unable to display a thumbnail when building the page (I'm guessing because a video file doesn't have a thumbnail?)

I've fixed this by checking that the exif data returned is actually an array, and skipping if it's not.  Also also hard-coding a check for MP4 filetype when building the thumbnails and have it use the 'thumb_movie.png' file instead.  It works, but my PHP is limited so it's very much a botch.

Thanks for this - just installed Coppermine for the first time, this plugin definitely gives it a more modern look!

David

Just solved. A research on  "Call to undefined function ctype_alpha()" indicates that  "php-ctype" extension for PHP  is missing. This extension is not installed by default. when installing PHP8.2. Sorry for "Dérangement".  Maybe this can nevertheless be useful to know when using php8.2.
Regards