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[Resolved] [Plugin: Moo Collapsing Categories] The plugin generated 8 characters of unexpected output during ac

  • Hi,

    upon activation, I get the following warning message from WordPress:

    The plugin generated 8 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.

    Maybe you have whitespaces or UTF-8 byte order mark in the beginning of your php files?

    http://wordpress.org/extend/plugins/mootools-collapsing-categories/

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