Downloading elf file failed on De2i-150

Hi, I'm a newbie. I'm having a problem using triple speed ethernet on De2i-150. I'm using the triple speed tutorial for De2-115, but I think they are quite similar. Apparently I'm having the same problem as this guy.

http://www.alteraforum.com/forum/showthread.php?t=51137

I create several project on this board and they all run fine. I think the problem maybe with the qsys system in the tutorial but I don't know what.

Can anyone help me?

Thank you very much!