[Serusers] Grandstream Budgettel 100 problems

Hi All, Has anyone got a Grandstream Budgettel SIP phone to work successfully with 8.10 version of SER. When Attempting to register I get an error with what appears to be the Allow header. Actual header value is from phone is (from ethereal capture is): Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, OPTIONS Log Entry Apr 17 10:39:52 mercedes /usr/local/sbin/ser[31505]: ERROR: get_hdr_field: bad body for <Allow>(1048576) Apr 17 10:39:52 mercedes /usr/local/sbin/ser[31505]: ERROR: bad header field Apr 17 10:39:52 mercedes /usr/local/sbin/ser[31505]: ERROR: build_res_buf_from_sip_req: alas, parse_headers failed Any help would be appreciated. Steve