You have errors in the minetweaker script
mods.magneticraft.Crusher.addRecipe(<appliedenergistics2:tile.OreQuartz>, <appliedenergistics2:item.ItemMultiMaterial:2>, <appliedenergistics2:item.ItemMultiMaterial:2>, 1, <appliedenergistics2:item.ItemMultiMaterial:2>, 0.01);
mods.magneticraft.Crusher.addRecipe(<appliedenergistics2:tile.OreQuartzCharged>, <appliedenergistics2:item.ItemMultiMaterial:2>, <appliedenergistics2:item.ItemMultiMaterial:2>, 1, <appliedenergistics2:item.ItemMultiMaterial:2>, 0.01);
mods.magneticraft.Crusher.addRecipe(<appliedenergistics2:item.ItemMultiMaterial:1>, <appliedenergistics2:item.ItemMultiMaterial:2>, <appliedenergistics2:item.ItemMultiMaterial:2>, 1, <appliedenergistics2:item.ItemMultiMaterial:2>, 0.01);
mods.magneticraft.Crusher.addRecipe(<appliedenergistics2:item.ItemMultiMaterial>, <appliedenergistics2:item.ItemMultiMaterial:2>, <appliedenergistics2:item.ItemMultiMaterial:2>, 1, <appliedenergistics2:item.ItemMultiMaterial:2>, 0.01);
OreQuartz should be oreQuartz (nether quartz ore)
Not sure what OreQuartzCharged is supposed to be as I can't find an ore with that oredict name.
What led me to this is the recipe for grinding quartz crystals in the Magneticraft grinder to quartz dust does not work.