Sorry for double post--noedit
But are you dropping them in your steam common folder, then blockland, THEN Addons? OR just dropping them in documents then blockland then addons. If you're doing it in documents, it's because you're launching the STEAM version, and you're putting them in the NONSTEAM version.
You appear to be launching from steam anyway,
"--------- Parsing Arguments ---------
argc = 4
argv[2] = -noconsole
argv[3] = -steam
Parsing command line arguments: -noconsole -steam"