Spoutcraft download destroyed all non-vanilla blocks and items on tekkit

[Numyyyy]

Launcher Version: 1.0.1.3

Operating System: Windows 7 home premium

Java Version: 7.050.6

Antivirus Program: Microsoft security essentails and avg

Description of Problem:

After downloading spoutcraft through the technic launcher, when I opened my tekkit world I found all non-vanilla blocks to have completely vanished from the game and NEI. This occurs in all tekkit worlds but no other modpacks have been affected as far as I know.

Error Messages:

None

Error Log:

Many Errors and other things saying [sEVERE] such as "error: entityId cannot be greater than 255.

[17:28:33] [sEVERE]"

[Torezu]

Get rid of AVG, even if just temporarily. It's probably preventing updates and just shutting down the whole process.