For those getting the "Error opening zip (Add-Ons/Server_DedicatedMinigame.zip), need to handle this better..." error, go into the add-ons folder, right click the zip, go to properties, and click Unblock at the bottom. I believe that only Windows 7 users have this issue.
Nevermind, still broken.
FIXED: Simply move all files out of the zip to your desktop, delete the zip, make a new zip with the same name, and copy everything back in. Kalphiter, your computer has some weird file permissions...