Texture Pack not loading

The Chroma Hills HD 128x  64x Texture Pack is not loading (and it was working just fine before the last update). it starts to open and then midway through closes out the entire game and send me back to the XBox home screen. i have tried it in both resolutions just to see if that was the problem and it still closes out the game and send me to the main XBox home screen. HELP!!!!!! i am in the Beta version 1.6.0.3