I am having problems with my server. It could be TConstruct or Builcraft, but whenever I join my server, my client freezes for a few secs, then crashes.

If anybody can make sense of what is going on in these stack traces please let me know.

My Client
http://pastebin.com/p19t9ugm
My Server
http://pastebin.com/1iE4A9EC
My Server after I join
http://pastebin.com/Z8X5FkHV

Thanks,
CausticLasagne

The client-side error is clearly caused by Tinker's Construct, report it to TCon devs.

The server-side error is caused by an outdated version of BuildCraft (pre-6.2.0), which has packet corruption bugs when combined with WAILA. Please update.