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1. Peter
   Member
   Posted 10 months ago #
   

   I installed Duplicator on my WP site running 3.4.1. When I activated the plugin, it came up with the message:

   The plugin generated 277 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.

   However, I was able to generate a package without any issues, so presumably I can ignore the warning?

   BTW, I had WP-SuperCache enabled when I activated Duplicator. Not sure if that was the cause of the conflict or not.

   http://wordpress.org/extend/plugins/duplicator/

2. lifeinthegrid
   Member
   Plugin Author
   Posted 10 months ago #
   

   Hey Peter,

   Haven't seen that issue before. Technically if you can get your package it shouldn't be an issue. Have you ever seen that when activating any another other plugins when Super Cache was enabled? I'll have to install Super Cache and see if I can reproduce.

   Thanks for the feedback!

3. Peter
   Member
   Posted 10 months ago #
   

   I don't recall seeing that message when installing any other plugins.

   I can confirm that Duplicator is working 100% fine on my site as I used it to transfer my WP site to another domain without any errors or hassles.

   I also looked in the WP error log and didn't see any error messages, so I'm guessing it's something relatively minor.

   One other thing I just thought of is that my site uses CloudFlare. Not how relevant that is though.

4. robwilkerson
   Member
   Posted 10 months ago #
   

   For whatever it's worth, I saw this when I recently activated the plugin as well. I ignored it at the time because it sounded relatively innocuous, but I've also found that installs on a target server fail, so maybe there's more to it after all.

   I have no idea whether they're related, but I thought I'd throw in with a hearty "me too".

5. lifeinthegrid
   Member
   Plugin Author
   Posted 10 months ago #
   

   Hey Rob,

   I'm closing out this thread as we have another one open and a help ticket thread going :)

6. lifeinthegrid
   Member
   Plugin Author
   Posted 10 months ago #
   

   Hey Peter,

   I will check into this on my dev box. I have also experienced some strange issues when using some of the Cache plugins. Sometimes they are very hard to replicate.

   Thanks again for the great feedback!

7. Peter
   Member
   Posted 10 months ago #
   

   I my wp-admin/error_log, I saw the following entry which would have been the reason for the message:

   [17-Jul-2012 23:42:42] WordPress database error Multiple primary key defined for query ALTER TABLE wp_duplicator CHANGE COLUMN bid bid BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY made by activate_plugin, do_action('activate_duplicator/duplicator.php'), call_user_func_array, duplicator_activate, dbDelta

   I did install an older version of duplicator on the site some time back, but deleted it in the interim.

8. lifeinthegrid
   Member
   Plugin Author
   Posted 10 months ago #
   

   Very nice find Peter! Thanks for taking the time to dig around a bit!

   I'll have to see if I can hide the output of dbDelta which is a built in WordPress function. BTW I just released a newer version a few minutes ago. If you do an update could you let me know how it goes?

   Thanks

9. Peter
   Member
   Posted 10 months ago #
   

   I installed Duplicator 0.3.0 and it's all good, ie: no WP error messages.

   Thanks.

10. lifeinthegrid
    Member
    Plugin Author
    Posted 10 months ago #
    

    Excellent!

    Thanks for the great feedback Peter!

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