when the grabber exits for any reason (like too many errors in getting data),
it pops up a prompt for the user to press OK. This interferes with running the grabber from a bat file in silent mode and as a result cannot take advantage of the error return code functionality to loop until a successful grab.
you dont have to specify a config directory, if you dont it will just use the current directory (same as the gui version), the config directory is to allow people to have multiple configurations with a single install of the program