FTB Direwolf errors......plz help me out

[Awesomekyle]

So im new to ftb in general I play it a lot. I will get past everything expect loading into the world I created. I suddenly get a error he is the pastebin plz help me out soon as possible
http://pastebin.com/EgA7haV9
Much appreciated

 

[Qazplm601]

somethings wrong with mapwriter.(or opis)

 

[Awesomekyle]

ya it worked perfectly fine before. now idk the internal server is messed up and I notice im not alone here