Subject RE: [IBO] System Cannot Find File
Author Helen Borrie
Oh, and more...

If you are running Classic, your applications can NOT connect to it using
the IPServer (i.e. cpLocal). You must use TCP/IP local loopback (localhost
as server, protocol cpTCP_IP). Make sure that the machine knows about
localhost, by ensuring that this entry exists in the
%system%\drivers\etc\hosts file: localhost