[OpenSER-Users] error loading presence_xml module

Hello, I have a problem when i try to add "presence_xml" module : ERROR : load_module: could not open module (/lib/openser/modules/presence_xml.so) : /lib/openser/modules/presence_xml.so : undefined symbol : add_event Do you have any idea about this error? Here is an extract of my openser configuration file: loadmodule "sl.so" loadmodule "tm.so" loadmodule "rr.so" loadmodule "presence.so" loadmodule "presence_xml.so" loadmodule "maxfwd.so" loadmodule "usrloc.so" loadmodule "registrar.so" loadmodule "textops.so" loadmodule "mi_fifo.so" # -- presence params -- modparam("presence", "db_url", "mysql://openser:openserrw@localhost/openser") modparam("presence_xml", "db_url", "mysql://openser:openserrw@localhost/openser") modparam("presence", "presentity_table", "presentity") modparam("presence", "active_watchers_table", "active_watchers") modparam("presence", "watchers_table", "watchers") modparam("presence_xml", "xcap_table", "xcaps") modparam("presence", "clean_period", 100) modparam("presence", "to_tag_pref", 'a') #modparam("presence", "lock_set_size", 8) modparam("presence", "expires_offset", 10) modparam("presence_xml", "force_active", 1) modparam("presence", "max_expires", 3600) modparam("presence", "server_address", "sip:localhost:5065") modparam("presence_xml", "pidf_manipulation", 1) Thanks for your help. Frederic.