Sadly, add me to the list of people experiencing crashes on 0.24 with 64-bit. KSP loads fine all the way to the menu. Attempting to load or create a new game crashes KSP. It might be a conflict between DMagic Orbital Science and this one on science definitions, perhaps? The crashes stop and KSP gets past the menu fine when I remove DMagic altogether. Two mods, attempting to access the same science functions, might be having a head-on?