Wrong version of forge, run only the recommended version. (397, they made a major change in versions beyond that)
Far as I know, only Railcraft has updated for newer forge versions.
Oh, thank you for help 
I think developers should note this in the topic.
Hey, guys. I have a problem. I have installed Forge Loader 6.4.1.407 and Industrial Craft 2 v1.109 on the 1.4.5 server and client. But when i trying to put any of IC2 blocks he is at once disappear. Here is a video
LINK TO VIDEO
Server log in the attachment.
Thanks.
