https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser Gravity Support Forums Topic: Fatal error: Cannot redeclare class CS_REST_NativeJsonSerialiser en-US Mon, 20 Apr 2026 07:10:08 +0000 http://bbpress.org/?v=1.0.1 q https://legacy.forums.gravityhelp.com/search.php https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-36913 Mon, 03 Oct 2011 15:42:56 +0000 Carl Hancock 36913@https://legacy.forums.gravityhelp.com/ <p>If you don't mind, can you post back what the plugin was that was causing the conflict so we can take a look at it internally? Thanks. </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-36551 Thu, 29 Sep 2011 00:27:44 +0000 cyteworks 36551@https://legacy.forums.gravityhelp.com/ <p>You were exactly right. I found the conflicting plugin. </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-36549 Thu, 29 Sep 2011 00:22:35 +0000 Carl Hancock 36549@https://legacy.forums.gravityhelp.com/ <p>@cyteworks This issue is typically caused by a plugin or theme conflict. You need to test for plugin and theme conflicts. Here are instructions on how to do so:</p> <p><a href="http://www.gravityhelp.com/documentation/page/Testing_for_a_Theme/Plugin_Conflict" rel="nofollow">http://www.gravityhelp.com/documentation/page/Testing_for_a_Theme/Plugin_Conflict</a></p> <p>If a plugin or theme is causing this issue due to some sort of conflict, this will narrow it down to which one is causing it and we can go from there to determine why. </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-36541 Wed, 28 Sep 2011 23:36:51 +0000 cyteworks 36541@https://legacy.forums.gravityhelp.com/ <p>Yes they are both the latest version </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-36432 Wed, 28 Sep 2011 09:47:27 +0000 Carl Hancock 36432@https://legacy.forums.gravityhelp.com/ <p>@cyteworks Are you running the latest versions of both those Add-Ons? Please make sure no updates are available for both. </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-36414 Tue, 27 Sep 2011 23:30:05 +0000 cyteworks 36414@https://legacy.forums.gravityhelp.com/ <p>I have both the campaign monitor addon and paypal addon and receiving this error. </p> <p>Thank You,<br /> Robb<br /> partner [at] cyteworks.com </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-31382 Mon, 01 Aug 2011 21:29:55 +0000 clickrmedia 31382@https://legacy.forums.gravityhelp.com/ <p>Thanks for the update. :) </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-31347 Mon, 01 Aug 2011 15:40:03 +0000 David Smith 31347@https://legacy.forums.gravityhelp.com/ <p>Hi Nicholas,</p> <p>I've just sent you the updated version. </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-31186 Fri, 29 Jul 2011 03:17:28 +0000 clickrmedia 31186@https://legacy.forums.gravityhelp.com/ <p>Hi, there.<br /> I had same issues as well..<br /> I am having wordpress 3.2.1<br /> my email address is <a href="mailto:nicholas@clickrmedia.com">nicholas@clickrmedia.com</a><br /> hope to get your reply soon. </p> https://legacy.forums.gravityhelp.com/topic/fatal-error-cannot-redeclare-class-cs_rest_nativejsonserialiser#post-31087 Wed, 27 Jul 2011 16:53:45 +0000 David Smith 31087@https://legacy.forums.gravityhelp.com/ <p>Hi Guildaccountant,</p> <p>I've sent you an email with a bug fix.</p> <p>For any other users experiencing "cannot redeclare" errors with the Campaign Monitor add-on, send me an email for the bug fix. </p>