You should have your "Blockland" folder anywhere but your Program Files folder. I would suggest putting it straight into C:\.
Vista uses a system whereby files written into the Program Files directory are actually stored in a "Virtual Store" which is found at "C:\Users\YourName\AppData\Local\VirtualStore\Program Files" which causes problems since all the prefs for Blockland are saved there, along with all the add-ons RTB downloads. So when you want to remove add-ons everything gets a little complicated.
Secondly, Vista seems to be doing strange things with zips where the zip becomes read only. This causes people using RTB to be unable to update their RTB or update the add-ons they've previously downloaded. In the next RTB I will be making it give you errors if you are one of these people.
So in conclusion, move your Blockland folder to C:\ (this is where the Blockland Installer will put Blockland by default had you not updated from v8).
