Ok so V8 has been giving vista users issues.
Follow these steps and you'll be able to extract add-ons and play Blockland with out any hassle:
1. Open blockland folder and right-click on blockland
-Select Properties
-A menue will pop up and select security at the top
2. Select Edit
-Remove the Group or Username Everyone, If there is a Group or Username as a bunch of random letters and/or numbers, remove that to
-For the Remaining names select one and give it Full Control in the Permissions for ___ box (the ___ being the name you selected)
-Repeat for the other names then select apply
3. Repeat these steps for the addons and base folders and Main.cs
A side note: you will almost certianly have to all administrator use when editing.
