Old fashion man using freepbx 2.9.0.12

I’m working with Freepbx 2.9.0.12 for many year and everything was going well until tuesday.
For the firstime i got the following error message in the GUI:

retrieve_conf failed, config not applied

Reload failed because retrieve_conf encountered an error: 11
(freepbx.RCONFFAIL)

I fear to do anything!!!
What does it mean ? Is “11” the number of the line in default or something else?
What can i do? What should i do.

Sincerely Yours
Tim

May I suggest using the debug feature to help narrow down the issue. Manual reference for the FreePBX version your running;

http://wiki.freepbx.org/display/SUP/Providing+Great+Debug

good luck