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Code Insert Manager (Q2W3 Inc Manager)
[resolved] WP3.6, W3 cache, (7 posts)

  1. frods
    Member
    Posted 8 months ago #

    I get this error:

    Fatal error: Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0

    It happens when I've got at the same time the following cache options activated in W3 cache http://wordpress.org/plugins/w3-total-cache/
    -minify
    -broswer cache
    -database cache
    -object cache

    http://wordpress.org/plugins/q2w3-inc-manager/

  2. Max Bond
    Member
    Plugin Author

    Posted 8 months ago #

    Hm...
    Problems with output buffering may be caused by wordpress version system.
    Look here

  3. frods
    Member
    Posted 7 months ago #

    Hi Max,
    Thank you for your reply!

    Let me see if I understand correctly.
    The Code Insert Manager is not compatible anymore with the latest WP version 3.6?

    From reading your link I didn't understand which plugin (CodeInsertManager or W3) creates the problem.

    I am very unsure if I possess the skills to safely execute the solutions (manually remove cache files, optimizing my database) in your link without breaking my sites.

  4. Max Bond
    Member
    Plugin Author

    Posted 7 months ago #

    Hi!

    The Code Insert Manager is not compatible anymore with the latest WP version 3.6?

    It is compatible! I am running it on many WP 3.6 sites without any problems...

    From reading your link I didn't understand which plugin (CodeInsertManager or W3) creates the problem.

    There is incompatibility between these plugins in certain situations...
    Also see this thread from W3C support - the same problem, but different plugins...

    ... I did some seaching for this error. Looks like it is memory related. Try to increase wp_memory_limit. Standard value is 32M, set to 64M or even 128M!

    I am very unsure if I possess the skills to safely execute the solutions

    Unsure? Don't do this or do on test site!

  5. frods
    Member
    Posted 7 months ago #

    Problem seems to be solved.

    I've set wp_memory_limit. in php.ini from 24MB to 64Mb, using FTP.

    I've installed the "Optimize Database after Deleting Revisions" plugin and ran it, decreasing DB size by 50%.

    Thanks for your help Max!

  6. Max Bond
    Member
    Plugin Author

    Posted 7 months ago #

    Very good! )

  7. frods
    Member
    Posted 7 months ago #

    Woops.

    It now sometimes works, not all the time.

    Sometimes I still get this error:
    Fatal error: Unknown: Cannot use output buffering in output buffering display handlers in Unknown on line 0
    Sometimes the page shows a blank page, without any error.

    I've checked my host, it allows 256MB memory_limit for PHP.

    I've set my php.ini to limit to 128MB like this in PHP.ini:
    memory_limit = 128M ; Maximum amount of memory a script may consume (128MB)

    I´ve set the wp-config.php to:
    /** Increase memory limit for php to 128MB. */
    define('WP_MAX_MEMORY_LIMIT', '128M');

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