For our self-hosted customers, we wanted to give you advanced notice that support for PHP 5.4 in the IPS Community Suite will be ending soon. IPS Community Suite 4.1.11 will be the last release to support this version of PHP.
PHP 5.4 was released in 2012 and reached 'end of life' in September 2015, and so we will be requiring at least PHP 5.5 from IPS Community Suite 4.1.12 onwards. We do recommend PHP 5.6 or greater as 5.5 is approaching end of life as well.
If you currently use PHP 5.4, please contact your host and ask them to upgrade to a supported version as soon as possible.
If you would rather not have to worry about server-level issues like this, consider switching to one of our Community in the Cloud plans. They include all of our suite apps and we take care of all of the server management for you, leaving you to focus on running your community. If you are currently self-hosting, we can transfer your community to a cloud plan for free, in most cases. Contact our sales team for more information.