Title: Synchronization Error // Failed to deserialize Last modified: August 21, 2016 --- # Synchronization Error // Failed to deserialize * Resolved [trapuh](https://wordpress.org/support/users/trapuh/) * (@trapuh) * [12 years, 3 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/) * Hi all, * I’m trying to use the Campaign Monitor Synchronization plugin with a new list i’ve created specifically to gather e-mails from the website…. and i’m getting the following error : * Campaign Monitor synchronization error. Failed to deserialize your request. Please check the documentation and try again.Fields in error: subscribers * I’m using wordpress 3.8.1 with WooCommerce and also have the ‘User Role Editor’ plugin activated to create a few user roles… * Can this be due to incompatibility issues ? Is there anything that can help me debugging this ? Please let me know if further information is required ! Thanks for all the help anyone can give! * [https://wordpress.org/plugins/campaign-monitor-synchronisation/](https://wordpress.org/plugins/campaign-monitor-synchronisation/) Viewing 15 replies - 1 through 15 (of 18 total) 1 [2](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/page/2/?output_format=md) [→](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/page/2/?output_format=md) * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716105) * I guess there is some data in ‘subscribers’ that breaks the json. What is stored in the field ‘subscribers’? can you disable this field in the plugin options and try again? * Please email me at [mail@carloroosen.nl](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/mail@carloroosen.nl?output_format=md). * Thread Starter [trapuh](https://wordpress.org/support/users/trapuh/) * (@trapuh) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716114) * Hi Carlo, * Many thanks for your reply, just e-mailed you now! * [kakashigr](https://wordpress.org/support/users/kakashigr/) * (@kakashigr) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716170) * I’m getting this error too. * I don’t check any fields, and the “subscribers” isn’t even on that list. * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716171) * Hi all, we introduced a new bug when repairing the previous. Just a sec, there will be a new version available in a minute * [kakashigr](https://wordpress.org/support/users/kakashigr/) * (@kakashigr) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716173) * The previous error is fixed with the update you just pushed. But now its giving me this error: * `Fatal error: Error making request with curl_error: Operation timed out after 10001 milliseconds with 0 bytes received` originating from transport.php – line 158 * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716174) * yes we have problems with svn right now. I’ll will send you a note when all is ready * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716176) * Hi kakashigr, * Seems done. We did not increase the version number, so you need to de-install the plugin and install it again. * The SVN commit only updated a few files, so it was incomplete. In the meantime we have no idea if this problem caused your bug. Please let me know. * Cheers, Carlo * [kakashigr](https://wordpress.org/support/users/kakashigr/) * (@kakashigr) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716177) * csrest_lists.php not found * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716178) * Hi kakashigr, * I am very sorry you experience these problems. Could you please upgrade to 1.0.8 now? * Thanks a lot for you patience, Carlo * [kakashigr](https://wordpress.org/support/users/kakashigr/) * (@kakashigr) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716181) * I’m afraid I still get the error * `Fatal error: Error making request with curl_error: Operation timed out after 10001 milliseconds with 0 bytes received` * thats on my VPS. * On my localhost, I get name or service not found after waiting for a long time each time. * [kakashigr](https://wordpress.org/support/users/kakashigr/) * (@kakashigr) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716183) * Full localhost error: * `Error making request with 0: php_network_getaddresses: getaddrinfo failed: Name or service not known` * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716185) * Hi kakashigr, * Is Curl enabled on your servers, localhost and VPS? It seems more like a server related error. * Thanks, Carlo * Thread Starter [trapuh](https://wordpress.org/support/users/trapuh/) * (@trapuh) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716186) * Hi kakashi, * If you don’t know how to do it (check if curl is installed or not), please follow this tutorial to create a phpinfo.php file that will show you what you have ( and have not installed) on your server : * [https://kb.mediatemple.net/questions/764/How+can+I+create+a+phpinfo.php+page%3F#gs](https://kb.mediatemple.net/questions/764/How+can+I+create+a+phpinfo.php+page%3F#gs) * It’s linked to mediatemple website but its instructions are pretty much generic… As soon as you’ve done the phpinfo file and upload it to the server, please open the file in the browser and try to locate the following :: * ‘cURL support : enabled ‘ … if it shows disabled, then it’s bad news for you and you need to yum curl back to php! * yummy! 🙂 hope this helps! * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716187) * Lena suggests: Maybe it is not cURL but some host that can’t be resolved or something like that, some DNS resolving error * Plugin Contributor [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * (@carloroosen) * [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/#post-4716188) * kakashi, * Maybe you could give us access to a public server. We are happy to help you. * Carlo Viewing 15 replies - 1 through 15 (of 18 total) 1 [2](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/page/2/?output_format=md) [→](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/page/2/?output_format=md) The topic ‘Synchronization Error // Failed to deserialize’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/campaign-monitor-synchronisation. svg) * [Campaign Monitor Synchronization (moved)](https://wordpress.org/plugins/campaign-monitor-synchronisation/) * [Support Threads](https://wordpress.org/support/plugin/campaign-monitor-synchronisation/) * [Active Topics](https://wordpress.org/support/plugin/campaign-monitor-synchronisation/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/campaign-monitor-synchronisation/unresolved/) * [Reviews](https://wordpress.org/support/plugin/campaign-monitor-synchronisation/reviews/) * 18 replies * 3 participants * Last reply from: [Carlo Roosen](https://wordpress.org/support/users/carloroosen/) * Last activity: [12 years, 2 months ago](https://wordpress.org/support/topic/synchronization-error-failed-to-deserialize/page/2/#post-4716199) * Status: resolved