Hi! I try use PJSIP from .NET Compact Framework by native DLL calls. After I start PJSIP, I want to register. When I try to do that, I always get: Data Abort: Thread=978e3cc0 Proc=814c6f20 'sip.exe' AKY=00004001 PC=03f8103c(coredll.dll+0x0002103c) RA=00001200(???+0x00001200) BVA=1e30c0d8 FSR=00000407 Unhandled exception at 0x03f8103c in IMSClient.exe: 0xC0000005: Access violation reading location 0x0030c0d8. that happens in "thread_main" in "pj_sock_select" function when it calls "select" function from winsock2.h ... return select(n, PART_FDSET_OR_NULL(readfds), PART_FDSET_OR_NULL(writefds), PART_FDSET_OR_NULL(exceptfds), p_os_timeout); every passed variable is ok any idea? thx, Attila -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090503/a74a0342/attachment.html>