I've had a 1.2.0 Tekkit server running fine, until I decided to upgrade to Tekkit 2.
I used Minecraft Map Converter, and flipped the values in Mapping.txt to downgrade to 1.1.4, then used WorldUpdater1.1 to convert it to Tekkit 2.
However, a certain chunk with buildcraft pipes, engines, etc, as well as a Computercraft computer and disk drive, cause the client to show a grey screen, then a white one, at which point it freezes.
The server console only logs an "end of stream" error.
Did I do something wrong? Please help me!
Thanks in advance.
EDIT: This is the log file: