Obviously, your first command line will not work, because you tell FFS to open an RTS monitoring configuration (which it does not know what to do with or how to handle) instead of an FFS sync configuration.
This basically encapsulates my dilemma, as I have no idea how an FFS sync configuration is supposed to be constructed. Sorry, but the instructions provided haven't improved on my lack of understanding.The second one should work OK, assuming c:\program files\freefilesync\realtimesync.ffs_batch is an existing, properly working FFS sync configuration, present in that specified location (which is a strange location to store FFS sync configurations and RTS monitoring configurations, because it is the program files location)Instead of your apparent struggle with the command line, simply use the option of dragging/dropping
a properly working FFS *.ffs_batch configuration into the RTS GUI window.
viewtopic.php?t=9632#p35366