Title: [Plugin: NextGEN Gallery] Not Generating Thumbnails Last modified: August 20, 2016 --- # [Plugin: NextGEN Gallery] Not Generating Thumbnails * [j_nichol](https://wordpress.org/support/users/j_nichol/) * (@j_nichol) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/) * I am unable to generate thumbnails using NGG 1.9.1 on WP 3.3.1. I have tried from the flash uploader, from the regular (non-flash) uploader, and by selecting‘ Generate Thumbnails’ from the drop down on the Manage Gallery page. The thumbnail directories are being created but files are not being generated/added to the folders. * The only way I can create the thumbnails is by entering each individual gallery, selecting ‘Edit thumb’ for each image individually, highlighting the entire image, and updating. Considering I have hundreds of images to upload, this is definitely not a viable option. * I have deleted NGG, deactivated all other plugins, and then re-installed NGG. It didn’t work. * I have tried NGG 1.8.4. It didn’t work. * I always receive the following message(s), with each attempt returning a different ID number. ID 6: A failure occurred ID undefined: A failure occurred * The Plugin Check Utility has passed all three tests. * Server Settings: Operating System : Linux (32 Bit) Server : Apache Memory usage: 15.99 MByte MYSQL Version : 5.0.91-log SQL Mode : Not set PHP Version : 5.2.17 PHP Safe Mode : Off PHP Allow URL fopen : On PHP Memory Limit : 64 PHP Max Upload Size : 8M PHP Max Post Size : 8M PCRE Backtracking Limit : 500000 PHP Max Script Execute Time : 30s PHP Exif support : Yes ( V1.4 ) PHP IPTC support : Yes PHP XML support : Yes * Graphic Library GD Version : bundled (2.0.34 compatible) FreeType Support : Yes FreeType Linkage : with freetype T1Lib Support : No GIF Read Support : Yes GIF Create Support : Yes JPG Support : Yes PNG Support : Yes WBMP Support : Yes XPM Support : No XBM Support : Yes JIS-mapped Japanese Font Support : No * Any help/suggestions/shots in the dark would help at this point! Thanks! * [http://wordpress.org/extend/plugins/nextgen-gallery/](http://wordpress.org/extend/plugins/nextgen-gallery/) Viewing 9 replies - 1 through 9 (of 9 total) * [Rainvur Jefferson Wilbre](https://wordpress.org/support/users/rainthebat/) * (@rainthebat) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485023) * Hi J_nichol, * If the images are real big in kb’s, I remember that can have an affect on processing. I had to adjust my memory limit (your is at: PHP Memory Limit : 64 MBs); To increase the memory limit, I opened up the .htaccess file in the root WP directory, and added this to the very top: * php_value memory_limit 120M * which may be a too large amount, but it was adequate to get thumbnails created in my case. * Thread Starter [j_nichol](https://wordpress.org/support/users/j_nichol/) * (@j_nichol) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485134) * Thanks for the suggestion [@rain](https://wordpress.org/support/users/rain/) Wilber! * I use GoDaddy for hosting so I had to make the change by adding “memory_limit = 120M” to my php5.ini file. The increased memory limit is reflected in my server settings on the NGG Overview page. Unfortunatley, that did not fix my problem. I am still unable to auto-generate thumbnails. * I might also mention I have NGG running beautifully on 3 other sites all using GoDaddy servers. This is the only one using WP 3.3.1 AND the only one with the problem. It works fine on WP 3.3.0 without increasing the memory limit and using the exact same images. * Does anyone know why the latest WP update would have broken NGG? * [Russtyp](https://wordpress.org/support/users/russtyp/) * (@russtyp) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485162) * I have a similar problem. The thumbnails disappeared before I updated the site to WP 3.3.1.1 * However when new images were uploaded, the new thumbnails appeared but the old ones or existing thumbnails did not. * I have upgraded to latest WP, the latest images that were put up are ok and show as thumbnails, but the previous images do not appear as thumbnails * Need some help on how to fix this, I have had the memory increased to 256 m but this has not helped. * [grumpyted](https://wordpress.org/support/users/grumpyted/) * (@grumpyted) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485205) * I have the same issue. I’d be interested in any fix found :o) * [grumpyted](https://wordpress.org/support/users/grumpyted/) * (@grumpyted) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485206) * My server tech added the following to php.ini * memory_limit = 64M * and that has fixed it. * Good Luck x * [sangfroidweb](https://wordpress.org/support/users/sangfroidweb/) * (@sangfroidweb) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485245) * [@j_nichol](https://wordpress.org/support/users/j_nichol/) – I have encountered the exact same issue on sites running WP 3.1.1 and NextGen Gallery 1.9.1 and 1.8.4 on Godaddy. I have increased memory limits in the php5.ini file as well to no avail…..not sure what else to try. Have you had any luck? * [k6xx1](https://wordpress.org/support/users/k6xx1/) * (@k6xx1) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485252) * [http://www.visser.com.au/blog/thumbnail-generation-php-memory-limit-nextgen-gallery/](http://www.visser.com.au/blog/thumbnail-generation-php-memory-limit-nextgen-gallery/) * [DoubleSixx](https://wordpress.org/support/users/doublesixx/) * (@doublesixx) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485254) * I re-installed 1.90 over 1.92 and solve my problems, it’s way more reliable. I also did the php5.ini increased memory ages ago. * [capodieci](https://wordpress.org/support/users/capodieci/) * (@capodieci) * [13 years, 5 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485340) * Hello everyone! * I have thumbnails generation problem using with WordPress 3.5 and NextGen Gallery 1.9.9 * I have a WPMU installation (I manage many websites with a single wordpress installation) and I have thumbnail generation problem only in some websites. I did try to deactivate all the plugins, but the problem persists. The only thing that changes from one website to the other is the theme, and I did try to switch the theme with the standard theme, but no difference. * The only problem that affect all the websites is the visualization of an image using websiteexample.com/wp-content/plugins/nextgen-gallery/nggshow.php?pid= 3&width=350&height=350 as this return a broken image. This affects, for example the possibility to edit a thumbnail (as the image on the left, in the dialog, does not appears). I did extensive search, but I found no solution. * Regarding the generation of the thumbnails I get the error “A failure occurred” and pressing on “more” it reads “Error: Create image failed. Check Safe Mode settings”. It cannot be the safe mode, as php.ini affects all the websites, and not just some. I searched about this, but found nothing. * Looking at the error logs of my web server I found this: ”Warning: imagecreatetruecolor(): Invalid image dimensions in xxx\wp-content\plugins\nextgen-gallery\lib\gd.thumbnail. inc.php on line 555” and ”Warning: imagecopyresampled(): supplied argument is not a valid Image resource in xxx\wp-content\plugins\nextgen-gallery\lib\gd.thumbnail. inc.php on line 940” * Anyone has some idea on how to solve this problem? Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘[Plugin: NextGEN Gallery] Not Generating Thumbnails’ is closed to new replies. * ![](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/) ## Tags * [thumbnails](https://wordpress.org/support/topic-tag/thumbnails/) * 9 replies * 8 participants * Last reply from: [capodieci](https://wordpress.org/support/users/capodieci/) * Last activity: [13 years, 5 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-not-generating-thumbnails/#post-2485340) * Status: not resolved