Title: Plugin not working Last modified: August 30, 2016 --- # Plugin not working * Resolved [whistlerdan](https://wordpress.org/support/users/whistlerdan/) * (@whistlerdan) * [11 years ago](https://wordpress.org/support/topic/plugin-not-working-293/) * Gee, I hate to be the first one 🙂 * Ok, so I installed this on a site that’s running the default 2015 theme. No problems. * Then I put it onto one that’s running Divi by Elegant Themes. you can check it out dancarrphotography.com * It just doesn’t work ok this site. Before I go through the whole process of disabling 20 plugins, is there any issues you have been having in this initial launch, that I should look at first? * I’ve flushed out my cache, and my browser and Cloudflare…. * It’s not the theme that is the issue, since I tested it on my dev build site and it works fine with the same theme. It’s also not a clash with my gallery plugin, Envira, which I thought might be the most likely candidate… * [https://wordpress.org/plugins/wp-featherlight/](https://wordpress.org/plugins/wp-featherlight/) Viewing 5 replies - 1 through 5 (of 5 total) * [SiteCare](https://wordpress.org/support/users/wpsitecare/) * (@wpsitecare) * [11 years ago](https://wordpress.org/support/topic/plugin-not-working-293/#post-6201338) * Hey whistlerdan, * We haven’t heard of of anything like that yet, but I think I see what the issue is. All of your images have a query string at the end of them (highlighted in yellow) [https://cloudup.com/czhFfJqLTBl](https://cloudup.com/czhFfJqLTBl) * The image match pattern in our plugin doesn’t account for query strings like that, just standard file names like .png .jpg .gif, etc. * We’re not sure what kind of performance impact adding conditions for that would be, so we’ll need to do some testing before it’s something we can include in the plugin. * In the meantime, I’d try and track down what’s adding that query string. My first guess is that it’s whatever caching plugin you’re using, or possibly cloudflare. * Which caching plugin are you using right now? We’ll do some testing to see if we can replicate the issue. * Thread Starter [whistlerdan](https://wordpress.org/support/users/whistlerdan/) * (@whistlerdan) * [11 years ago](https://wordpress.org/support/topic/plugin-not-working-293/#post-6201341) * How very odd! You know, i’ve noticed that string before and always wondered what was doing it. It appears to be the exact same query for every image. * I’m using w3 Total Cache at the moment, but I’m also running that, and CloudFlare, on the site where WP Featherlight is working, so I’m not sure that is the issue. I’m not ruling W3 out just yet though because the plethora of options could mean I have the two sites configured differently…. * I notice now that if I go to one of my other web properties (largely running the same set of plugins), it too has the query string. albeit a different number. * I’ll have to do a bit of digging around I guess, and then try disabling some stuff. If you find out what it is, could you let me know here, please? I absolutely LOVE the idea of this lightweight plugin and I’m desperate to implement it 🙂 * [SiteCare](https://wordpress.org/support/users/wpsitecare/) * (@wpsitecare) * [11 years ago](https://wordpress.org/support/topic/plugin-not-working-293/#post-6201343) * I think I know what’s going on 🙂 * See if you can find this setting in W3 Total Cache: * **Browser Cache → General** that says Prevent caching of objects after settings change → Whenever settings are changed, a new query string will be generated and appended to objects allowing the new policy to be applied. * Make sure that box is _unchecked_ and that should resolve your issue. * Let us know if that works or if you run into any other problems! * Thread Starter [whistlerdan](https://wordpress.org/support/users/whistlerdan/) * (@whistlerdan) * [11 years ago](https://wordpress.org/support/topic/plugin-not-working-293/#post-6201354) * You rock! That’s totally what it was 🙂 * [SiteCare](https://wordpress.org/support/users/wpsitecare/) * (@wpsitecare) * [11 years ago](https://wordpress.org/support/topic/plugin-not-working-293/#post-6201377) * Glad to hear it! Viewing 5 replies - 1 through 5 (of 5 total) The topic ‘Plugin not working’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/wp-featherlight_121e24.svg) * [WP Featherlight - A Simple jQuery Lightbox](https://wordpress.org/plugins/wp-featherlight/) * [Support Threads](https://wordpress.org/support/plugin/wp-featherlight/) * [Active Topics](https://wordpress.org/support/plugin/wp-featherlight/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-featherlight/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-featherlight/reviews/) * 5 replies * 2 participants * Last reply from: [SiteCare](https://wordpress.org/support/users/wpsitecare/) * Last activity: [11 years ago](https://wordpress.org/support/topic/plugin-not-working-293/#post-6201377) * Status: resolved