These are the issues we are having. With our minecraft game.... in any world  we load, new or old, we see nothing but these annoying pink and black checkered blocks. Not to mention the setting for each option is all wierd now too... please see attached pictures to see what I'm talking about. This randomly started happening when we loaded the game up, and it hasnt changed for the last 48hours.... how do we fix this!? Or... can you fix this on your servers?

I would also like to add that there are NO texture packs loaded... this is just the game as it is.. it is hard to navigate through the settings due to how it is now listed even...