Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM in .../wiki/extensions/Video/VideoClass.php on line 503
using in MW 1.18.0, PHP 5.2.17 (cgi), MySQL 5.0.92-1~ui40+1
Topic on Extension talk:Video/Flow
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Maybe the PHP Version too low
Yeah, try upgrading PHP.