Thank you for the post.
“The Mac OSX web server service is currently off, but I've tried this with it on too.”
Does this mean the Mac OS X Server.app is installed?
Please note: Mac OS X 10.9 Mavericks is a tested operating system, but Mavericks with the Server.app is not tested.
As a test, if you uninstall the Mac OS X Server.app and uninstall and reinstall FileMaker Server 13, then does this still occur?
A similar issue was reported in the following thread:
Thank you so much for the response - I unfortunately cannot uninstall the Server.app because it is configuring and running DHCP and DNS... I have figured out a work around (not going to user WebDirect for now, going to just build a web page and publish it with the information I need - it would have just been easier for it to come straight from the database so that I would have to worry about updating in two places), and I'll just revisit this over the summer when I can reconfigure and possibly move services from one machine to another - can't do it in the middle of the school year when there are too many folks using and depending on the servers involved...
Just something to check... Do your privilege set(s) within the hosted FM databases have the "Access via FileMaker WebDirect" Extended Privilege checked in File > Manage > Security?
Server App has some conflicts with the FM Web Engine. It is not recommended to have both running. If you need both, get another machine for one or the other. A few people have creatively managed to get their unique installs running both on the same machine but it is not normal to do so.