I build my sip proxy from today's master and it didn't start:
May 2 15:12:51 char sip-proxy[22422]: 0(22474) ERROR: <core>
[core/sr_module.c:512]: load_module(): could not open module
</usr/lib/x86_64-linux-gnu/sip-proxy/modules/usrloc.so>:
/usr/lib/x86_64-linux-gnu/sip-proxy/modules/usrloc.so: undefined symbol: ul_cseq_delay
-- Juha