Multisite Toolbar Additions
[resolved] cannot remove user (Warning: Cannot modify header information) (6 posts)

  1. webby1973
    Posted 2 years ago #

    I wanted to remove a user from the main site, but this is the alert:
    "Warning: Cannot modify header information - headers already sent by (output started at /home/xxx/domains/xxx/public_html/wp-content/plugins/multisite-toolbar-additions/multisite-toolbar-additions.php:878) in /home/xxx/domains/xxx/public_html/wp-includes/pluggable.php on line 875"

    I reloaded the page, still the same error and nothing else (except the Notice I posted on a previous thread), but going back with the browser showed the user was actually deleted from the specified webiste.
    So, what is that warning about?


  2. daveshine (David Decker)
    Plugin Author

    Posted 2 years ago #

    Thanks for your feedback!

    Just tested, cannot reproduce that.

    However, I just made test file, with added checks for some constants.
    It would help me, if you could test the below linked file. Just overwrite the main plugin file in /wp-content/plugins/multisite-toolbar-additions/ with the unzipped file from my download. That should fix this.
    Download here:

    Does that help?

    Thanks, Dave :)

  3. webby1973
    Posted 2 years ago #

    Hello Dave,

    what did you use to compress it? when I unzip it, it just creates a file "multisite-toolbar-additions_test.zip.cpgz"

  4. daveshine (David Decker)
    Plugin Author

    Posted 2 years ago #

    It was zipped with the regular Ubuntu ZIP app - use that for all, never heard of such a behavior. Maybe it's on your OS or from saving? -- Just did another download from Dropbox and works great...

    However, please try this link:
    --> it's directly to the php file
    --> use the "Download" link on the top right corner

    Thanks, Dave :)

  5. webby1973
    Posted 2 years ago #


    now it is working :) Thank you.
    I did some tests, creating and deleting users, no problem.
    I'll let you know if the notice appears again.

    PS: my desktop is OS X.

  6. daveshine (David Decker)
    Plugin Author

    Posted 2 years ago #

    Great, thank you!

    I guess I will push a bugfix update before the next big update :)

    Thanks, Dave :)

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