It might be Gamemode-mining, but im not sure. If you use gamemode-mining too many times and get your levels over 360, then it can make not blockland but your WHOLE COMPUTER unusable. Boy, was that easy to fix.
You are an idiot.
well just keep on downloading but if it wont work Just follow these steps 1.find blockland 2.cut it or delete it 3.download it again 3simple steps