Installing FreePBX 2.11.0

I installed FreePBX 2.11.0 in Centos 6.5 following the next guide:

After the instalation can’t login, I have the following problem:

Error: Did not receive valid response from server
XHR response code: 200 XHR responseText: undefined jQuery status: parsererror

Can you help me?

chown -R asterisk /var/lib/php/session

I put the command but the problem still continue…

Anybody who can resolve this?