I am trying to install the version 1.9.3 on a CentOS 64 bits.The server information is: Kernel 2.6.32-431.20.3PHP: 5.4.26Apache: 2.2.26MySQL: 5.6.17After setting the default values (names, emails and etc) the install process cannot continue and the a 500 error, and the error.log display the following: PHP Notice: Invalid check function: Must be callable in /home/xx/public_html/xx/include/class.signal.php on line 63 PHP Notice: Invalid check function: Must be callable in /home/xx/public_html/xx/include/class.signal.php on line 63xx = hidden values.Could somebody help me?Thank you