Freepbx fail to detect Fax For Asterisk license

Hi.
Just finished setup cenos 5.4, asterisk 1.8, freepbx 2.8 and Fax for asterisk (free license). Connection to pstn via TE220P E1.
when i tried to setup an extention (using freepbx gui) i’ve got an error message:
ERROR: No Fax license detected. Fax-related dialplan will NOT be generated! This module has detected that Fax for Asterisk is installed without a license. At least one license is required (it is available for free) and must be installed.

Although Asterisk looks OK:
CLI> module show like fax
Module Description Use Count
res_fax.so Generic FAX Applications 1
res_fax_digium.so Digium G.711 and T.38 FAX Technologies ( 0
2 modules loaded

CLI> fax show licenses
Fax Licensing Information

Free fax licenses: 1
Total licensed ports: 1
Licenses Found:
File: FFA-M68ZPFBRFZ9T.lic – Key: FFA-M68ZPFBRFZ9T – Product: RESFFA – Host-ID: 50:25:05:89:eb:91:42:dd:a3:89:93:09:57:84:59:57:53:26:01:56 – Ports: 1 (OK)

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Is someone has any expiriance with this combination?
Any idea??