Crashes when trying to load map.

Hello,
Version is for Minecraft 1.7.10 with the Computercraft version 1.73 in SSP
so i believe i narrowed it down this:

Stacktrace:
at dan200.computercraft.shared.computer.blocks.TileComputerBase.getFamily(TileComputerBase.java:412)
at dan200.computercraft.shared.computer.blocks.TileComputer.createComputer(TileComputer.java:110)
at dan200.computercraft.shared.computer.blocks.TileComputerBase.createServerComputer(TileComputerBase.java:427)
at dan200.computercraft.shared.computer.blocks.TileComputerBase.func_145845_h(TileComputerBase.java:201)

I can also post the entire crash report if needed. Didnt see a option for uploading files.

I do apologize for not having it in the right format.

Thank you

Please paste the entire crash log into pastebin.com (or a similar service) and post a link to the resulting page here.

As requested here is the Crash report.

http://pastebin.com/w8LiduYX