Error Downloading Modpack

[PoseidonsMinion]

Whenever I attempt to download the Direwolf 1.4.6 Version, The Download stops. It happens when the file is around 90% done. I use Panda Security, and use a Vista system. My internet isnt terrible. It gives no explanation when it finishes downloading just (as I said) Error Downloading Modpack. I own a Minecraft account and it logs in. The file just wont download. My friends cant find their Directories to give me the mod pack.

 

[Ashzification]

Try the Force Update button in the Options tab.

 

[Nessiroj]

and otherwise disable the AV -> Download the pack -> enable AV again.