I’m installing Collabtive (a PHP Project Management open source software) on my dedicated server (Control Panel: Virtualmin; Operating system: CentOS Linux 5.7; PHP: 5.1.6); after installing everything via install.php successfully, I log in to the Dashboard then go to System administration section, the system stop working and give an error message: Fatal error: Class DateTimeZone could not be located
This page stops there without any suggestion to fix the issue and there is no any setting in config.php file (/config/standard/config.php) that mention about it.
Collabtive-System-administration
My friend say that my PHP current version is too old (5.1.6) and I may need to upgrade PHP to resolve the issue. And then I follow some instructions to upgrade PHP on my server to 5.2.17 the problem is solved.
