[Serusers] ser-0.8.14 and nat+rtpproxy

error with rtpproxy i am run set and show its messages. what is el problem and solution? 0(1940) 10(1979) DEBUG: init_mod_child (-1): nathelper 10(1979) ERROR: send_rtpp_command: can't read reply from a RTP proxy 10(1979) WARNING: rtpp_test: can't get version of the RTP proxy 10(1979) WARNING: rtpp_test: support for RTP proxyhas been disabled temporarily 11(1980) DEBUG: init_mod_child (5): nathelper 11(1980) ERROR: send_rtpp_command: can't read reply from a RTP proxy 11(1980) WARNING: rtpp_test: can't get version of the RTP proxy 11(1980) WARNING: rtpp_test: support for RTP proxyhas been disabled temporarily 13(1982) DEBUG: init_mod_child (7): acc 13(1982) DEBUG: init_mod_child (7): group 14(1988) DEBUG: init_mod_child (8): acc 14(1988) DEBUG: init_mod_child (8): group DEBUG: init_mod_child (0): acc 0(1940) DEBUG: init_mod_child (0): group 12(1981) DEBUG: init_mod_child (6): uri 13(1982) DEBUG: init_mod_child (7): uri 15(1989) DEBUG: init_mod_child (-4): uri 12(1981) 14(1988) 0(1940) 13(1982) DEBUG: init_mod_child (7): nathelper 13(1982) ERROR: send_rtpp_command: can't read reply from a RTP proxy 13(1982) WARNING: rtpp_test: can't get version of the RTP proxy 13(1982) WARNING: rtpp_test: support for RTP proxyhas been disabled temporarily DEBUG: init_mod_child (6): nathelper 12(1981) ERROR: send_rtpp_command: can't read reply from a RTP proxy 12(1981) WARNING: rtpp_test: can't get version of the RTP proxy 12(1981) WARNING: rtpp_test: support for RTP proxyhas been disabled temporarily DEBUG: init_mod_child (8): uri DEBUG: init_mod_child (0): uri 14(1988) 15(1989) DEBUG: init_mod_child (8): nathelper 14(1988) ERROR: send_rtpp_command: can't read reply from a RTP proxy 14(1988) WARNING: rtpp_test: can't get version of the RTP proxy 14(1988) WARNING: rtpp_test: support for RTP proxyhas been disabled temporarily DEBUG: init_mod_child (-4): nathelper 15(1989) ERROR: send_rtpp_command: can't read reply from a RTP proxy 15(1989) WARNING: rtpp_test: can't get version of the RTP proxy 15(1989) WARNING: rtpp_test: support for RTP proxyhas been disabled temporarily 0(1940) DEBUG: init_mod_child (0): nathelper 0(1940) ERROR: send_rtpp_command: can't read reply from a RTP proxy 0(1940) WARNING: rtpp_test: can't get version of the RTP proxy 0(1940) WARNING: rtpp_test: support for RTP proxyhas been disabled temporarily