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1. RickA99
   Member
   Posted 8 months ago #

   I just installed Mail Queue and I get this error message.

   WPMQ Error. The wp_mail() function already exists. This is likely to be caused by another plugin.

   Subscribe2 is version 6.5.

   How do I trouble shoot this problem?

   Thanks.

2. MattyRob
   Member
   Posted 8 months ago #

   @RiskA99,

   Disable all other plugins and reload the WPMQ page - the error should disappear.

   Then re-activate your other plugins one at a time and reload the WPMQ after each one - when the error message appears you'll have the culprit. Then you need to request a fix from the other plugin author or simply stop using it.

3. RickA99
   Member
   Posted 8 months ago #

   Thanks. It was WP Security Scan by Website Defender that was causing the problem.

4. MattyRob
   Member
   Posted 8 months ago #

   @RickA99,

   Having just had a look at the code it's because this plugin requires the WP core pluggable.php file on loading instead of using the action API. That means the pluggable code is called earlier than it should be.

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