I am thinking, it must be a typo.....but the square bracket should enclose manual, like so [Manual]
Otherwise, rest of config/ini file looks okay. "Un-commenting" actually means removing ";" before the ManualBallKey=....." command. Un-commenting will make that command 'active', so you will have to press Shift+W (Toggle Water Rudder Key) to 'call the ball' yourself.
Try starting vLSO AFTER you are already in the sim. For some people this works too.
In my case, I have found, if the hook is down 'before' the break, the vLSO will more often than not..work correctly.