Yeah, for FSFK, enter your FTP information (copy the lines from app.config into local.config). Just see if FSFK uploads images into that folder which you set up.
There's a commit going up, you can add these two lines in local.config
Config::Set('VACENTRAL_DEBUG_MODE', true);
Config::Set('VACENTRAL_DEBUG_DETAIL', 2);
And send me the core/logs/vacentral.txt file I'll see if I can debug from using that.
Also, get your vacentral parameters again from vacentral, they changed (though it will accept old format)