Follow these
• Put the editor folder in the blockland folder, no further in
• Have a blockland shortcut on the desktop
• Right click the shortcut and hit Properties
• In the "Target" area, type this, without the "s of course ""C:\Program Files\Blockland\Blockland.exe" -mod editor"
• Hit Apply then OK
• Start up blockland and start a server and hit F11 for the mission editor or F10 for the GUI editor