Thank you for your post.
Unfortunately, the error message is not much help since it refers to a resource with no name.
Before uninstalling and reinstalling, stop and restart the server. You can do this from the command line interface as follows:
fmsadmin close (this will close all of your database files)
fmsadmin stop server
fmsadmin start server
If this fails, then try entering the following command:
sudo apachetl -t
If this fails, then it is difficult to determine what is the cause. I would then perform an uninstall and reinstall of FileMaker Server 10.