Chunks in a certain world do not render properly

Basically, I have problems trying to play on one world. All my other worlds work fine but in this one creative world the chunks do not load properly. When I try to play on it it will load a few chunks but then not load others. This is not a problem in any of my other worlds, just this one. Oh ya and when I try to save and exit, it gets to the loading screen and does not let me leave, it stays loading forever (not a problem on any other world).