Bug Feed The Beast Ultimate, world chunks won't load!

[Hampan083]

Hi, when i go in to my FTB world, the chunks are completly black and won't load, and if i stay afk in the world for like 1 0 minutes the world may load like 1 chunk. When i logout from that world and login again on the world the chunk isn't loaded anymore! Please help, i can't play on my world anymore. It is also lags so when i destroy a block i don't get the block (sry for my bad english)

 

[lenscas]

Can you put the log (the text you see in the console) on pastebin and put the link to it here?
Do new worlds load correctly?