http://www.icyphoenix.com/viewtopic.php?f=29&t=4205&p=28476#p28476
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Mighty Gorgon
Sun 18 May, 2008 00:41

Re: 027-0011 Wrong Default Profile Option On Registration
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Tell the users to run this SQL:

[codeblock]ALTER TABLE `phpbb_users` CHANGE `user_allow_pm_in` `user_allow_pm_in` TINYINT(1) NOT NULL DEFAULT '1';
ALTER TABLE `phpbb_users` CHANGE `user_allow_mass_email` `user_allow_mass_email` TINYINT(1) NOT NULL DEFAULT '1';[/codeblock]