Sorry to hear you are having problems here, however you are misunderstanding the problem, unfortunately. The system checks you have the minimum requirements for the software to run. You do indeed have those minimum requirements. It cannot check your servers configuration is correctly working though unfortunately. What is happening here is that the system is trying to write a session to the location which your PHP installation says to write to, and your server is saying "No, I cant do that". We have no control over what is happening there in any way unfortunately.