Translations:Installation FAQ/131/en
From LimeSurvey Manual
Stuck at checking file system permissions
If SELinux is activated (primarily on CentOS), then you might get an error that the file system permissions are not correct, even if the list of directories is empty. SELinux prevents writing even though the permissions are for example on 777 or 755. To configure SELinux correctly for your server - check out the SELinux documentation.