I am having a similar problem
I received my free activation code and my sstem does not recognize it either.
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Version: 5.0.5 (Win32)
Created on: Feb 1 2013 13:44:03
License Status: No license
License Duration: Permanent
Additional license information: Domains: 1/0, Calls: 0/0, Extensions: 0/0, Attendants: 0/0, Callingcards: 0/0, Hunt Groups: 0/0, Paging Groups: 0/0, Service Flags: 0/0, IVR Nodes: 0/0, Agent Groups: 0/0, Conference Rooms: 0/0, CO Lines: 0/0
Working Directory: C:\Program Files\snomone\snomONE
MAC Addresses: 000C6EBE9801
DNS Servers: 192.168.3.1
IP Addresses: 127.0.0.1 192.168.3.145
CDR: Duration(7d): trunk = 0, extension = 0, ivr = 0
Calls: Total 0/0, Active 0/0 Calls
SIP packet statistics: Tx: 0 Rx: 0
Emails: Successful sent: 0 Unsuccessful attempts: 0
Uptime: 2013/2/9 17:32:01 (uptime: 0 days 00:04:06) (46MB/1983MB 23% 47960-0) WAV cache: 0
Number of HTTP sessions: Sessions: PAC=0, HTTP=1; Threads: SIP=0, HTTP=6
Domain Statistics: Total Domains: 1, Total Accounts: 13