well that is useless
if the add-on you want is in an add-ons folder use (my preferance or any other good rar/zip extractor)7-zip to put the add-on in (in windows ) C:/program files/blockland
if the addon is not in an add-ons folder or is a .cs file you put the add-on directly into the add-ons folder, with a .cs you just need to press save when downloading and make the path C:/program files/blockland/add-ons . If the the add on is in a .zip or .rar use 7-zip or anyother good rar/zip extractor. and put it
C:/program files/blockland/add-ons folder . If the addon in this case hase more than one item like a cs file and a folder then click one then press and hold ctrl and click the other item, then extract as said above.