Thread:Project:Support desk/Install error Warning: preg replace() function.preg-replace : Compilation failed: this version of PCRE is not compiled with PCRE UTF8 support at offset 0 in /var2/mediawiki-1.16.0/includes/Title.php on line 2285/reply (6)

Sometimes command line and web server have two different versions of PHP. In any case, things broke for you on the following chunk of code:  preg_replace( '/[ _\xA0\x{1680}\x{180E}\x{2000}-\x{200A}\x{2028}\x{2029}\x{202F}\x{205F}\x{3000}]+/u', 'foo', 'bar' );  Try running it both from command line and web server.