Hey I had the same prob till I relized there was nothing I could do so I uninstalled all my ESF stuff, and ever since haven't worried bout downloading it again cause everytime I try to I get to a certain point then it crashes saying something bout corrupt files, so here I am with out the game. Might as well just wait for Budokai 2, and Taiketsu, or until a Adventure/Action DBZ game comes out that I'm garunteed will work for me lol.
Man it sucks.I want to play it on the net.I can only play lan because theres a place where it is just fast internet speed and lan games and only some games are single player.Next time i go i'll to get on the net.
http://www.bandwidthplace.com <-- check your connection
"rate 1000" <-- check your rate in config.cfg (DSL ~ 7500)
if you can play on LAN, you should be able to play in internet, too ... just try different servers or try to host an internet server