{"id":18888032,"date":"2026-04-22T16:38:22","date_gmt":"2026-04-22T16:38:22","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/plugin-conflicts-52\/"},"modified":"2026-04-22T16:38:22","modified_gmt":"2026-04-22T16:38:22","slug":"plugin-conflicts-52","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/plugin-conflicts-52\/","title":{"rendered":"Plugin Conflicts"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">I just wanted to report a couple of plugin conflicts not listed in your documentation. Having either of these plugins active at the same time as Smart Slider 3 will trigger the following error (php file path shortened by me):<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><code>PHP Fatal error: substr_replace(): Cannot use output buffering in output buffering display handlers in .\/plugins\/nextend-smart-slider3-pro\/Nextend\/Framework\/WordPress\/AssetInjector.php on line 125<\/code> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For me I only notice this error triggering when I attempt to edit a WooCommerce product.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Conflicting Plugins:<\/p>\n\n\n\n<ul>\n<li><a href=\"https:\/\/wpmudev.com\/project\/wp-hummingbird\/\">Hummingbird<\/a> (pro version; page caching enabled, asset optimization off)<\/li>\n\n\n\n<li><a href=\"https:\/\/wordpress.org\/plugins\/tax-exemption-woo\/\">WP Tax Exemption for WooCommerce<\/a> (free version, default settings)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">At the moment I&#8217;m setting up a WooCommerce store on an existing site, so I can work around the issue by deactivating those plugins while creating\/editing products, but obviously that&#8217;s not a great long-term solution for when the client takes over the store.<\/p>\n","protected":false},"template":"","class_list":["post-18888032","topic","type-topic","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/18888032","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/18888032\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=18888032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}