Help Voltz Singleplayer worlds not loading

[Multiepic]

hey so yeah as the title says on voltz every single time i go on voltz and go onto multiplayer multiplayer works absolutely fine but whenever i go onto singleplayer it doesn't work i click on the world i want to go on and it keeps on loading for ages and ages and then comes up downloading terrain and that takes ages ages ages ages and ages and never loads cause i didn't wait any longer cause i was fed up and i also created a new singleplayer world and it also done the says it took ages and ages to on the loading bit then came the downloading terrain and still don't work please help me i need good help here please help me i will appreciate any help just please help.