Title: [Plugin: CDN Sync Tool] Error on activation Last modified: August 19, 2016 --- # [Plugin: CDN Sync Tool] Error on activation * Resolved [Shelby DeNike](https://wordpress.org/support/users/sdenike/) * (@sdenike) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/) * I have WP-Super-Cache 0.9.7(Also tried the 0.9.8 release and same errors) installed and setup for my CDN (S3, Cloudfront), and also CDN Sync 0.3. When I activate the plugin I get these errors on the top of the Admin screen. ————– Warning: array_keys() expects parameter 1 to be array, boolean given in /home/USERNAME/ public_html/wp-content/plugins/cdn-sync-tool/lib/Cst/Plugin.php on line 48 * Warning: array_merge() [function.array-merge]: Argument #1 is not an array in/ home/USERNAME/public_html/wp-content/plugins/cdn-sync-tool/lib/Cst/Plugin.php on line 49 * Warning: array_merge() [function.array-merge]: Argument #1 is not an array in/ home/USERNAME/public_html/wp-content/plugins/cdn-sync-tool/lib/Cst/Plugin.php on line 50 * Warning: Invalid argument supplied for foreach() in /home/USERNAME/public_html/ wp-content/plugins/cdn-sync-tool/lib/Cst/Plugin.php on line 21 ————– And also errors below that ————– Looks like you don’t have your theme files sync’d. Click here to Sync them. Plugin Dependices haven’t been met, WP Super Cache or W3 Total Cache are required. ————– I am running PHP 5.3.3, upgrading as we speak to 5.3.4… Please advise. * [http://wordpress.org/extend/plugins/cdn-sync-tool/](http://wordpress.org/extend/plugins/cdn-sync-tool/) Viewing 8 replies - 1 through 8 (of 8 total) * Thread Starter [Shelby DeNike](https://wordpress.org/support/users/sdenike/) * (@sdenike) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849183) * Sorry I am using 0.9.9.8 of WP-Super-Cache right now. * Plugin Contributor [Backie](https://wordpress.org/support/users/backie/) * (@backie) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849252) * Yea seems like an error in the plugin depencies check, I’ll have a quick look into it and I’ll get back to you. * Plugin Contributor [Backie](https://wordpress.org/support/users/backie/) * (@backie) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849253) * Figured it out, it’s because it’s doing a check for network activated plugins on a single site install (Doh!). It’s been fixed for the next release but since that isn’t going to be ready for a while you may want to do the quick edit yourself. * Change line 49 of lib/Cst/Plugin.php from * `$activePlugins = array_keys(get_site_option("active_sitewide_plugins"));` * To * `$activePlugins = (get_site_option("active_sitewide_plugins")) ? array_keys(get_site_option(" active_sitewide_plugins")) : array();` * [craigtommola](https://wordpress.org/support/users/craigtommola/) * (@craigtommola) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849317) * @ Backie – did you mean line 49? My line 49 saya: * `$activePlugins = array_merge( $activePlugins , get_option("active_plugins") );` * not: * `$activePlugins = array_keys(get_site_option("active_sitewide_plugins"));` * As you noted above. Please confirm Thx CT * Plugin Contributor [Backie](https://wordpress.org/support/users/backie/) * (@backie) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849318) * [@craigtommola](https://wordpress.org/support/users/craigtommola/) * Good catch it’s actually line 48. On monday or something I’ll start using the svn trunk functionality so I can just link to revisions. * [craigtommola](https://wordpress.org/support/users/craigtommola/) * (@craigtommola) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849319) * I made the change and it got me past the recognition of WP Super Cache. Then I was trying to Sync Files and received this error: * `Fatal error: Call to undefined function get_mu_plugins() in /nfs/c01/h08/mnt/ 14148/domains/landandseapackaging.com/html/wp-content/plugins/cdn-sync-tool/lib/ Cst/Plugin.php on line 50` * I’m going to play with that a bit to see if I can solve it. Thx CT * Plugin Contributor [Backie](https://wordpress.org/support/users/backie/) * (@backie) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849320) * I started a thread on wp-hackers about it. The call to that shouldn’t be getting done until admin_head and the function does exist so the question is why is it not being found. If you figure it out please let me know 🙂 * Plugin Contributor [Backie](https://wordpress.org/support/users/backie/) * (@backie) * [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849329) * Found a work around, change line 31 from * `add_action("init", array($this, "syncFiles")) &&` * to * `add_action("admin_init", array($this, "syncFiles")) &&` Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘[Plugin: CDN Sync Tool] Error on activation’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/cdn-sync-tool.svg) * [CDN Sync Tool](https://wordpress.org/plugins/cdn-sync-tool/) * [Frequently Asked Questions](https://wordpress.org/plugins/cdn-sync-tool/#faq) * [Support Threads](https://wordpress.org/support/plugin/cdn-sync-tool/) * [Active Topics](https://wordpress.org/support/plugin/cdn-sync-tool/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/cdn-sync-tool/unresolved/) * [Reviews](https://wordpress.org/support/plugin/cdn-sync-tool/reviews/) * 8 replies * 3 participants * Last reply from: [Backie](https://wordpress.org/support/users/backie/) * Last activity: [15 years, 4 months ago](https://wordpress.org/support/topic/plugin-cdn-sync-tool-error-on-activation/#post-1849329) * Status: resolved