I currently have FMA 11, 12, and 13 installed on the same machine. Only ver 12 has been giving me this problem, and only for the last couple of months (though I have been using it since its release date): On startup, before any files are opened, it displays a dialog titled "Web Publishing Error" and states that there is a port conflict requiring me to change the port for IWP. I am not using this machine as a host, I do not have FileMaker Server installed on my LAN. I have only one client who is using IWP on a database I built for him, for almost a year now. Though he asks for new builds about once or twice a month, I always work on my copy of the solution --- which has never been on a server -- and then migrate his data from the live server at night, from his backup, after it has run. Any ideas as to what is going on and why it suddenly started happening just a couple of months ago?