[Serusers] SIP authentication

Hi, I tried to use uac module to authenticate my SER to an external SIP provider. When I tried to call uac_auth(), I got: BUG:uac:uac_auth: empty reply on picked branch. Searching on this list, I found a patch on http://lists.iptel.org/pipermail/serusers/2005-May/019806.html that fixed that "bug". Ok, now I can authenticate with my SIP provider, but I can't see BYE from calle (actually from this sip provider, i think). Does anyone know how to fix this problem (is it a CSeq incrementation problem?). Is there any other way to authenticate to this type of service providers ? Anyone with success on this ? Thank you. -- Thomas Storino Britis TCNet Inf e Telecom LTDA