Newer versions of Apache default to using character set utf8 instead of 8851-1.

For many, the quick fix after migration to a newer server is to edit this file:

ubbthreads/languages/english/generic.php

and update this:

$ubbt_lang['CHARSET'] = "UTF-8";

to this:

$ubbt_lang['CHARSET'] = "8859-1";


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Tomorrow they call you "ahead of your time".