No 1.6.4 modpacks work

[Mtshaw113]

So none of the modpacks work, no idea why it decided to not work all of a sudden.
Pastebin: http://pastebin.com/WaRLCxxm(DW20 1.0.14)
Specs: Windows 8.1 64 bit, 8GB of RAM, Intel i5 @ 3.00 GHz
So ya, i've tried the Direwolf pack and the Monster pack, so im just going to assume it happens on all packs because I dont want to download like 8 more packs.

 

[Wagon153]

You need more permgen. Go to the Options tab in the FTB launcher, and press the Advanced Options button. Paste this in the Additional Java Parameters box.

-XX:PermSize=256m

 

[Tristam Izumi]

You need more permgen. Go to the Options tab in the FTB launcher, and press the Advanced Options button. Paste this in the Additional Java Parameters box.

-XX:PermSize=256m

Actually, it's not a permgen issues for this one:

JVM Flags: 4 total; -Xms256M -Xmx3328M -XXermSize=256m -Xmx512M

Bolded for effect. You have a global Java flag that's overriding the FTB launcher setting.

Fix: Right click on Computer and go to Properties. Under the Advanced tab, click "Environment Variables". In the System Variables section, look for one for Java and delete it. Play Minecraft.