Hi, No idea where to start with this one - I'm using code that previously worked on a prior version before 2.2.1 (unsure of the specific version as the filesystem has since been nuked). -bash-3.2$ python sip_greeter.py 13:53:14.882 os_core_unix.c !pjlib 2.2.1 for POSIX initialized 13:53:14.883 sip_endpoint.c .Creating endpoint instance... python: ../src/pj/sock_select.c:46: PJ_FD_ZERO: Assertion `sizeof(pj_fd_set_t)-sizeof(pj_sock_t) >= sizeof(fd_set)' failed. Aborted -bash-3.2$ What would trigger this? python 2.7 on CentOS 5.5 - 2.6.18-371.3.1.el5 #1 SMP config.log here: http://pillock.net/config.txt Rgds -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20140502/1518ade0/attachment.html>