Title: Gallery Issues – caching? Last modified: April 25, 2026 --- # Gallery Issues – caching? * [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [1 month, 2 weeks ago](https://wordpress.org/support/topic/gallery-issues-caching/) * Hi folks, * I mentioned elsewhere I had big issues trying out the latest versions of Nextgen Gallery in my **staging** site. So i did not touch my live site which was working perfectly. It is on 4.02. I did update few other plugins, but nothing that should have affected my galleries. WPStaging, for example. * I clear my browser cache. Go to my galleries. I click one and it may load or take quite some time to load. I click my back link above the images or the slider image to return to galleries and open another. May open or may take a very long time to open. As if it is first caching all images. It never did this before. * What can i try to fix this? * Thanks! Viewing 15 replies - 1 through 15 (of 16 total) 1 [2](https://wordpress.org/support/topic/gallery-issues-caching/page/2/?output_format=md) [→](https://wordpress.org/support/topic/gallery-issues-caching/page/2/?output_format=md) * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [1 month, 2 weeks ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18890969) * OK, found the culprit. Not yet the solution. This plugin: Disabled Source, Disabled Right Click and Content Protection, has conflict with either WordPress 6.9.4 and/or NextGen Gallery 4.02. NextGen 4.20 had other issues, but now I may try that again.Galleries hang/timeout progressively (3rd or 4th gallery I try to open)Problem disappears completely when plugin above is deactivatedTested across multiple plugin versions including 1.6.4 to 1.71 for DSDRCCP which claims WP 6.9 compatibility from 1.64 onAll browsers affectedSo, if any assistance. would be appreciated. * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [1 month, 2 weeks ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18890993) * OK, without the DSDRCCP plugin NextGen works perfectly. SO I tried NG 4.20 again. It has onlt one small issue I can see, but a deal breaker cosmetically. This is how I look in 4.02 [https://www.dropbox.com/scl/fi/ep14mtbespm5jkiihtg6b/nextgen-2.jpg?rlkey=0mnzvcw5b6og8w323ez2ggu4j&st=jcwo0wxx&dl=0](https://www.dropbox.com/scl/fi/ep14mtbespm5jkiihtg6b/nextgen-2.jpg?rlkey=0mnzvcw5b6og8w323ez2ggu4j&st=jcwo0wxx&dl=0) * This is how I look in 4.20: * [https://www.dropbox.com/scl/fi/rbk8dgnb08ltvrg1f6zhj/NextGen-4.20.jpg?rlkey=i3xqxpydlkj8yb2rg3521uiwu&st=c82k60lr&dl=0](https://www.dropbox.com/scl/fi/rbk8dgnb08ltvrg1f6zhj/NextGen-4.20.jpg?rlkey=i3xqxpydlkj8yb2rg3521uiwu&st=c82k60lr&dl=0) * How can I fix that? I have changed no settings. Thanks. * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [1 month, 2 weeks ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18892369) * I actually tried 4.20 again. Found where to change actual image thumbnails, but not gallery thumbnails. I’d really like to stay current but this as shown about just does not work aesthetically. Is there any where I can change those sizes to the same I see in 4,02? * Thanks. * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [1 month, 2 weeks ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18894757) * OK then. I guess I am stuck with 4.02 forever. * [camiltulcan](https://wordpress.org/support/users/camiltulcan/) * (@camiltulcan) * [1 month, 2 weeks ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18895578) * “Failed to update display type settings. Please try again.” * Version 4.2.0 * Is impossible to change the thumbnail size inside layout-settings. * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [1 month, 1 week ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18901705) * Any chance of getting help with this? * Plugin Support [Mihai](https://wordpress.org/support/users/mceban/) * (@mceban) * [1 month ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18907942) * Hi [@rebop](https://wordpress.org/support/users/rebop/) , * Sorry for the delayed response. * To set custom dimensions for your thumbnails, go to** “Imagely > Galleries”** select the gallery you need, then navigate to the** “Customize”** tab. Ensure**“ Thumbnails”** is selected, and toggle on the** “Override thumbnail settings” ** checkbox. You can then enter your desired width and height dimensions. * [@camiltulcan](https://wordpress.org/support/users/camiltulcan/) , if you’re encountering a conflict with legacy settings, try temporarily activating them. Your URL should look like: [https://www.mywebsite.com/wp-admin/admin.php?page=imagely-settings&tab=hidden](https://www.mywebsite.com/wp-admin/admin.php?page=imagely-settings&tab=hidden). Toggle the button, refresh the page, and then click **“Save Options”** without any changes. This should enable you to adjust options in the new UI. * Best regards, Mihai * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [1 month ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18907958) * Thanks. But why did this change in 4.20? You do realize i am talking about ALBUM thumbnails, not gallery, yes? Do you know what the default for those were before the change? Those were perfect as my images show. * I’ll take a look at this when I have a little time. - This reply was modified 1 month ago by [rebop](https://wordpress.org/support/users/rebop/). * Plugin Support [Mihai](https://wordpress.org/support/users/mceban/) * (@mceban) * [4 weeks, 1 day ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18909133) * Hi [@rebop](https://wordpress.org/support/users/rebop/) , * It’s quite odd that there were changes in image sizes during the update from NextGEN Gallery 3.x to 4.x, as no such changes were intended. * Since you mentioned the issue affects albums, could you tell me how you added the album to the page? It would be helpful to know if you used NextGEN Gallery, Imagely blocks, or shortcodes. If you used a shortcode, please provide it so we can check its parameters. * It might be possible that default thumbnail settings were changed during the update, although we’re not aware of this being a widespread issue. I apologize for any trouble this has caused. * For the Compact Album, you can adjust the thumbnail sizes by editing the album under **“Imagely > Albums”**. Navigate to the **“Settings”** tab and toggle on the **“Override thumbnail settings”** checkbox to enter your custom thumbnail size. * I hope this helps. * Best regards, Mihai * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [4 weeks, 1 day ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18909138) * Thanks. My images above are **4.0.2** and **4.2.0 **. I think it changed with 4.1.1 but not positive. I changed NOTHING other than the update. No shortcode, etc. NO changes. * If I try to adjust the Album Thumbnail sizes, what is the default in 4.0.2 so I can try to match? * I’ll do some testing. Thanks. * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [4 weeks, 1 day ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18909545) * I tried 4.2.1 tonight. Same issue. Tried to change the ALBUM thumbnail size and it did not work. No change in “visiting site” from WordPress in my staging site. Tried 240×160 and still small as shown in my link above. - This reply was modified 4 weeks, 1 day ago by [rebop](https://wordpress.org/support/users/rebop/). * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [3 weeks, 6 days ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18910413) * [@mceban](https://wordpress.org/support/users/mceban/) I had my guru take a look and it appears the default album thumbnail size in 4.0.2 is 186×124 and in 4,2.0 and 4.2.1 it is 96×68! Overriding produces a slightly larger thumbnail, but not what it was previously nor what is desired. * We think it is an issue in the releases. Can you check please? * ~Bob * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [3 weeks, 3 days ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18914062) * Can anyone please address this issue? I would hate to have to find another gallery and redo all the work I put into my current one. * Would be greatly appreciated. And I do think this is a bug that has not been widely reported. * Plugin Support [Mihai](https://wordpress.org/support/users/mceban/) * (@mceban) * [2 weeks, 4 days ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18920609) * Hi [@rebop](https://wordpress.org/support/users/rebop/), * After thoroughly reviewing the code, comparing versions 4.0.2 with 4.2.x, I can confirm that this issue is not caused by a regression from the update. The relevant code remains consistent across these versions. * The situation is likely as follows: your live site (4.0.2) has the “Override thumbnail settings” enabled for the album, using your custom dimensions, ensuring correct display. However, your staging site lacks this override, defaulting to 96×68px, a legacy fallback size used since NGG 3.x when no override is set. * Here’s how to fix it: 1. On your staging site, go to** Imagely > Albums**, open the album, and navigate to the **Settings **tab. 2. Enable** “Override thumbnail settings” **and enter your desired dimensions—check your live site under the same tab for reference. 3. Save the settings and clear any page cache. The thumbnails will regenerate automatically on the next page load, so bulk regeneration isn’t necessary. * For future staging setups, I recommend copying your live database to staging to ensure all your display settings transfer correctly. * Please let me know if this helps * Thanks.Mihai * Thread Starter [rebop](https://wordpress.org/support/users/rebop/) * (@rebop) * [2 weeks, 3 days ago](https://wordpress.org/support/topic/gallery-issues-caching/#post-18920686) * Thanks. Do note, up to and including 4.0.2 I have never had to make that change. It always kept my settings. * 4.21 is throwing LOTS of errors when working in the module. Just a few examples: * [26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass::$alttext in /home3/xxxxx/wp-content/plugins/nextgen-gallery/templates/Thumbnails/index. php on line 87 [26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass:: $image_slug in /home3/xxxx/wp-content/plugins/nextgen-gallery/templates/Thumbnails/ index.php on line 89[26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass::$alttext in /home3/xxxx/wp-content/plugins/nextgen-gallery/templates/ Thumbnails/index.php on line 107[26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass::$alttext in /home3/xxxx/wp-content/plugins/nextgen-gallery/ templates/Thumbnails/index.php on line 108[26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass::$pid in /home3/xxxx/wp-content/plugins/nextgen- gallery/src/DataStorage/Manager.php on line 2661[26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass::$pid in /home3/xxxx/wp-content/plugins/ nextgen-gallery/src/DataStorage/Manager.php on line 2641[26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass::$galleryid in /home3/xxxx/wp- content/plugins/nextgen-gallery/src/DataStorage/Manager.php on line 1179[26-May- 2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass::$pid in /home3/ infoumei/xxxx/wp-content/plugins/nextgen-gallery/src/DataStorage/Manager.php on line 2641[26-May-2026 15:23:26 UTC] PHP Warning: Undefined property: stdClass:: $galleryid in /home3/xxxx/wp-content/plugins/nextgen-gallery/src/DataStorage/ Manager.php on line 1179[26-May-2026 15:23:26 UTC] PHP Warning: Trying to access array offset on value of type null in /xxxx/wp-content/plugins/nextgen-gallery/ templates/Thumbnails/index.php on line 110[26-May-2026 15:23:26 UTC] PHP Warning: Trying to access array offset on value of type null in /xxxx/wp-content/plugins/ nextgen-gallery/templates/Thumbnails/index.php on line 111 Viewing 15 replies - 1 through 15 (of 16 total) 1 [2](https://wordpress.org/support/topic/gallery-issues-caching/page/2/?output_format=md) [→](https://wordpress.org/support/topic/gallery-issues-caching/page/2/?output_format=md) You must be [logged in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fgallery-issues-caching%2F%3Foutput_format%3Dmd&locale=en_US) to reply to this topic. * ![](https://ps.w.org/nextgen-gallery/assets/icon-256x256.png?rev=2083961) * [Photo Gallery, Sliders, Proofing and Themes - NextGEN Gallery](https://wordpress.org/plugins/nextgen-gallery/) * [Frequently Asked Questions](https://wordpress.org/plugins/nextgen-gallery/#faq) * [Support Threads](https://wordpress.org/support/plugin/nextgen-gallery/) * [Active Topics](https://wordpress.org/support/plugin/nextgen-gallery/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/nextgen-gallery/unresolved/) * [Reviews](https://wordpress.org/support/plugin/nextgen-gallery/reviews/) * 16 replies * 3 participants * Last reply from: [rebop](https://wordpress.org/support/users/rebop/) * Last activity: [2 weeks, 2 days ago](https://wordpress.org/support/topic/gallery-issues-caching/page/2/#post-18922111) * Status: not resolved