[Serusers] radius_is_user_in error

Hello. I'm trying SER 0.8.14 with FreeRadius. The radius server and SER are running in the same pc. I'am able to authenticate using radius but I have problems when I try to check the group mebership. Help! Thanks. FreeRadius log: rad_check_password: Found Auth-Type Digest auth: type "digest" modcall: entering group authenticate A1 = alejandro:sip2.cn.ryerson.ca:cisco1234 A2 = INVITE:sip:94161000@sip2.cn.ryerson.ca KD = 53d3b82970bada131a062103f553b8b8:42dc1764b51d79819e7e9f755aab7b639cc2175a:00000017:7DB990955AB8490D85411C0796224362:auth:18227b358ffe96049a3745eeb449fae2 modcall[authenticate]: module "digest" returns ok modcall: group authenticate returns ok radius_xlat: 'Authenticated' Login OK: [alejandro(a)sip2.cn.ryerson.ca/&lt;no User-Password attribute>] (from client proxy port 5060) Sending Access-Accept of id 145 to 192.168.2.1:32823 Reply-Message = "Authenticated" Sip-Rpid = "1970" Finished request 6 Going to the next request --- Walking the entire request list --- Waking up in 6 seconds... rad_recv: Access-Request packet from host 192.168.2.1:32823, id=146, length=55 User-Name = "alejandro" Sip-Group = "pstn" Service-Type = Group-Check NAS-IP-Address = 192.168.2.1 NAS-Port = 0 modcall: entering group authorize Invalid operator for item Suffix: reverting to '==' Invalid operator for item Suffix: reverting to '==' Invalid operator for item Suffix: reverting to '==' modcall[authorize]: module "preprocess" returns ok modcall[authorize]: module "chap" returns noop rlm_eap: No EAP-Message, not doing EAP modcall[authorize]: module "eap" returns noop modcall[authorize]: module "digest" returns noop rlm_realm: No '@' in User-Name = "alejandro", looking up realm NULL rlm_realm: No such realm "NULL" modcall[authorize]: module "suffix" returns noop modcall[authorize]: module "files" returns notfound modcall[authorize]: module "mschap" returns noop modcall: group authorize returns ok auth: No authenticate method (Auth-Type) configuration found for the request: Rejecting the user auth: Failed to validate the user. Login incorrect: [alejandro/<no User-Password attribute>] (from client proxy port 0) Delaying request 7 for 1 seconds Finished request 7 FreeRadius User file. alejandro(a)sip2.cn.ryerson.ca Auth-Type := Digest, User-Password == "cisco1234" Reply-Message = "Authenticated", Sip-Rpid = "1970" alejandro(a)sip2.cn.ryerson.ca Auth-Type := Accept Reply-Message = "Authorized", Sip-Group == "pstn" the SER Config. . . . . if (!radius_www_authorize("")) { www_challenge("", "1"); break; }else{ if (radius_is_user_in("group", "pstn")){ forward(192.168.2.101,5060); break; }; }; . . . .