Hi. I has a problem. i put silkworm(exnihilo:silkworm) at red spruce leaves(forestry:leaves) after that minecraft crashing every time, when i join server. i try to do this in singleplayer - after deleting infested leaves crashes was stopped.
For the future when addressing crash reports please paste them to pastebin.com and copy and paste the link in your post.
I've removed those naughty leaves, don't infest the forestry trees, they crash the server. Stick to those vanilla ones.