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I was never edit / includes / utf / utf_tools.php I noticed that after installing forum to a new hosting provider. Users write in Cyrillic. Here is a copy of the 1845 line in the wrong file. I'd be happy if someone help. 1843 function utf8_htmlspecialchars($value) 1844 { 1845 return htmlspecialchars...

When I'm trying to edit the overall_header.html in the ACP, returns the following error:

[phpBB Debug] PHP Notice: in file /includes/utf/utf_tools.php on line 1845: htmlspecialchars() [function.htmlspecialchars]: Invalid multibyte sequence in argument

Please, help!