My Guide to playing Blockland on Vista:
-For port forwarding, you have to use IPv4 in the Properties menu when setting up a static IP.
-It's recommended you install Blockland to the very front of your Hard Drive folder (example, install to C:\ ). Vista has special security protocols in it that don't allow users or programs to modify their own files, at least not properly or without permission. You'll either need to enable permission, which is a long maze of buttons and properties, or just put it in C:\ or whichever letter your Hard Drive is. Install RTB2 for more convenience in Add-On downloading.