Hello! I've made one module with one api function and one app function. I added one extension to call my app. I only print a console message whitin the app function. If I unload the module, make one change on the code, compile, install an reaload the module, when calling the extension which exec the app I get a core. I can see with gdb: ---------------------------------- #0 0x00b20010 in switch_core_session_run (session=0x87be678) at src/switch_core_state_machine.c:338 338 STATE_MACRO(init, "INIT"); (gdb) bt full #0 0x00b20010 in switch_core_session_run (session=0x87be678) at src/switch_core_state_machine.c:338 index = 2 global_proceed = 1 state = <value optimized out> endstate = 12771850 endpoint_interface = <value optimized out> driver_state_handler = 0x65a660 application_state_handler = 0x3910e0 new_loops = 59994 __PRETTY_FUNCTION__ = "switch_core_session_run" __func__ = "switch_core_session_run" #1 0x00b1ac16 in switch_core_session_thread (thread=0x873a250, obj=0x87be678) at src/switch_core_session.c:1162 session = 0x87be678 event = <value optimized out> event_str = 0x0 val = 0x0 __func__ = "switch_core_session_thread" __PRETTY_FUNCTION__ = "switch_core_session_thread" #2 0x00ba2456 in dummy_worker (opaque=0x873a250) at threadproc/unix/thread.c:138 No locales. ---Type <return> to continue, or q <return> to quit--- #3 0x0011596e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0 No symbol table info available. #4 0x001f6a0e in clone () from /lib/tls/i686/cmov/libc.so.6 No symbol table info available. ---------------------------------- But I don't see which could be the problem. Any idea? Regards