@Jmdzett No idea, I'll re-iterate sjain's point that seeing as the mod hasn't been updated since mid-2016, i'm assuming that the problem hasn't been fixed. I have no idea what's causing it, it might not even be the developer's problem. Just try re-downloading it, and if it doesn't work, you might just have to live without it for a while.
This might just be me being stupid but whenever I try to extract the .RAR file it says that the file may be corrupt. Does this happen for anybody else?