BL4AST3D

Whenever I click play for the 'Realm of Mianite' or 'The World of Mianite' on the Technic Launcer, it always closes TL then reopens.. It doesn't actually open up minecraft and/or run it.. Any help? I have tryed reinstalling it on different versions but still.. It just closes the application then reopens on the mod page. It doens't do ANYTHING on the Minecraft-side of things.