This just happened to me spontaneously, in FileMaker 14. When I was using FileMaker Pro Advanced this morning, on a local file, it crashed. After I re-opened it, it seemed to be working ok. Later on, when I tried to connect to a remote host, none of my favorite hosts icons appear in the remote box! Strangely enough, my FileMaker 13 favorite hosts are all gone as well! I was at a client yesterday, on their WiFi, and opened both for a brief time. I have no idea what happened. I suspect the something happened to my .plist files, but I have not been mucking around in my libraries (I'm running Mac OS X 10.10 - Yosemite).