Hi, i am using the exec_avp command as followed: *exec_avp("[/usr/local/etc/kamailio/maintenance/service/service_pr.sh", "$avp(xxx),$avp(yyy)");* ** here is the shell script content: ** *RETVAL=-1 RES=`kamctl cr reload` RETVAL=$? echo "$RETVAL" echo "$RES"* ** I keep on getting 127 as the retval. any ideas why? I must say that two days ago, the script was OK..... :-( where i run the script manualy i have no problems... retval is 0. here is the log with debug 4: *cfg_set_now(): core.debug has been changed to 4 Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: <core> [md5utils.c:67]: DEBUG: MD5 calculated: 64d3de5c2447acd6006b8539d1246e10 Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: exec [exec_hf.c:267]: SIP_HF_CONTENT_LENGTH=0 Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: exec [exec_hf.c:267]: SIP_HF_CSEQ=1 OPTIONS Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: exec [exec_hf.c:267]: SIP_HF_CALLID=123 Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: exec [exec_hf.c:267]: SIP_HF_TO=&lt;**you(a)kamailio.org* &lt;you(a)kamailio.org&gt;*&gt; Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: exec [exec_hf.c:267]: SIP_HF_FROM=<**you@kamailio.org>;tag=123*<you@kamailio.org%3E;tag=123> *Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: exec [exec_hf.c:267]: SIP_HF_VIA=SIP/2.0/UDP 127.0.0.1 Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: exec [exec_mod.c:208]: executing [/usr/local/etc/kamailio/maintenance/service/service_pr.sh] Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: DEBUG: <core> [main.c:852]: SIGCHLD received: we do not worry about grand-children Mar 12 14:20:43 server-Test /usr/local/sbin/kamailio[16589]: CRITICAL: <script>: 127,0*