Not fully starting up

[CaptianCreeper56]

Launcher Version: 378

Operating System: Windows 7

Java Version: Java system update 45

Antivirus Program: Malawarebytes

Description of Problem:

Whenever I choose Tekkit, the new version, it stops loading the modpack and it stops at this

0% version.json

I need help on this please !

Error Messages:

None

Error Log:

None

[Chefsbrian]

Disable your antivirus and see if issue persists.