[Serusers] Alias problems

I read all the former posts and added the line lookup("aliases") in to my ser.cfg and I try to start ser but this is the output 0(0) submit_query(): Table 'ser.alias' doesn't exist 0(0) submit_query(): Error while submitting query 0(0) preload_udomain(): Error while doing db_query 0(0) register_udomain(): Error while preloading domain 'alias' 0(0) domain_fixup(): Error while registering domain ERROR: error ffffffff while trying to fix configuration after tham I tried to test it by using serctl add alias command, but when the command is executed it seems that ser will go to infinite loop any idea? thanks, Andrea