This page Support → Health Check allows you to see a quick view of the health status of your GetSimple installation.

Warnings are will still allow you to use GetSimple, while Errors should be taken care of immediately.

The first part of the page lists the PHP/Apache modules and functions that GS uses.

The second part of the page lists all the pages within your site, and if their respective XML files are formatted properly.

The third part checks for the existence of the correct .htaccess files within your folders. This is for security, and not usually necessary for the site to work.