Alright, I've figured out the water issue, but now there's another problem. I don't want to turn this into a whole new thread, I'm sorry.
I accidentally, while moving the water, set the Y to 3000, while trying to set it to 300. I clicked onto another water thing to check the height, but the game had a mind of it's own and turned the blank space to 0's when I clicked the other water I guess... After that the game crashed... o,o
I'm sorry to ask for help again, probably should have created a new thread. But, just asking, how can I get back into the map without the water crashing the game? u.u