[Serusers] duplicate invite

hello, I am using ser 0.8.14 with tm and acc modules and I have multiple "failure_route" blocks. when the call setup takes longer the client sends a second invite with the same call-id which I see in accounting that is not logged (it is absorbed by tm module as a retransmission I think) everything is OK, but the main route block is still executed for the retransmitted invite. is there a way I can configure ser not to execute the main routing block for the retransmitted invite ? I have tried: --------------------------------------- if (!t_newtran()) { break; } OR if(t_lookup_request) { break; } --------------------------------------- in the main route block but I get: "WARNING: script writer didn't release transaction" and a "server error" at client side. is 0.8.14 the latest "stable" version of ser ? thanks, Razvan Radu