Hello list, Here's another assertion failure that I found when running pjsua with PJ_CONFIG_MINIMAL_SIZE either set or not. In the source file pjlib/src/pj/ioqueue_common_abs.c:1200: PJ_ASSERT_RETURN(allow || PJ_IOQUEUE_HAS_SAFE_UNREG, PJ_EINVAL); ...prints 'pj_ioqueue_set_concurrency: Assertion `allow || 0' failed' on the Maemo platform (Linux/ARM). It's clear that the function 'pj_ioqueue_set_concurrency' which includes the above assertion is called with the parameter 'allow' set to 0, but the rest of this logic is unclear to me. Is 'allow' a mutex for a threaded worker function or something like that? Unfortunately I have no solution to suggest. Maybe someone who understands this better can do so? Regards, Michael