I deleted the config files, into server and into client....
I deleted world folder from server...
nothing fix this
I'm very sad.
Yeah ID 17 happens to be your tree logs. ><; You've tried reinstalling the mod recently? Perhaps on both the server and the client? (Assuming it is your server of course)?
I'm running three other mods; Optifine, X-ray mod, and Too Many Items.
Also, I've already tried updating Java.. it didn't do anything to solve the problem.
Did you "hard install" these mods or are you using a launcher? Because Optifine doesn't generally play nicely with a modloader type mod. However, if you are using a Launcher to "install" these mods, put Forge at the top of your list. If you don't use a launcher, might I suggest Magic Launcher?
It's what I use and it gets Forge to play with Optifine just fine, even if they both have 1 error in the listing but you don't notice anything wrong in-game at all.
Also, shame on you for x-ray! I do not approve of cheaters!
There appears to be two different Forge links on the first post of this forum... I found that one of them actually shoots an error when you try to start up the game. Atleast for me... Might I suggest you go to this page, and start with the most recent one and see if it fixes it. If not, go down the list to previous ones, though I know for sure that 696 works and up.