It's likely caused by another 3rd party plugin you use on your site. There was the hypeLists plugin mentioned once causing problems with pagination in Tidypics. If you are using this plugin, you might test with this plugin disabled to see if it makes any difference. If it's not hypeLists it might be another plugin that alters something within the pagination process. I don't know what could be the problem though - and quite frankly I am not ready to debug another dev's plugin that I don't even use myself... Maybe the issue is already solved in hypeLists anyway (https://github.com/hypeJunction/hypeLists/issues/6), so you might test it with the latest release available (3.0), if you are using hypeLists and haven't updated to this recent version yet.

Do not use hypelist plugin. Could this be a memory problem?

Could this be a memory problem?

You can check these settings:

In php.ini:

; Maximum number of files that can be uploaded via a single request
max_file_uploads = 50

@RvR this is not about uploading of images (images already in the album). So, I don't think any php.ini setting has anything to do with it.

@jededitor I don't think that it's a memory issue because the slideshow loads even more images at once (and you said it works). If it's not hypeLists then it's likely another plugin that causes the problem. My guess is that is has something to do with pagination. I don't know what plugin exist that modify Elgg's pagination (infinitescroll etc.) as I don't use any of them. You need to test the likely candidates of these plugins (maybe including your theme plugin) to find out which of the plugins is causing the problem.

Just curious, what happens if you add ?limit=50 to the URL?

Tested and tested to replicate this error and cannot - arrived at the conclusion that it is due to an external error ie the person uploading the images as nobody else had this problem...