Just to make sure, you cannot play this mod with saves that were created without this mod. The part of the mod that would update the save data to be compatible is currently incomplete.
This mod, or the "crystal mod", is much larger than other mods and often does not work with other mods, so by using those other mods this mod may not work. However, without knowing exactly which mods you have, it is difficult to know whether they would likely cause errors or not.
