Crashes after launching

[Gokufighther]

Title:

Crashes after launching​

Launcher Version:

1.4.7​

Modpack:

INFINITY​

Modpack Version:

1.7.10​

Log Link:

http://pastebin.com/5VvFLbtB​

Details of the issue:

I click launch and it just.... stops and sends me back to the launcher... i changed my perm size to 512m and it still doesnt work at all. (just checked again, it only does it with infinity now)

PC SPECS:
INTEL Pentium G3258 @4.5GHZ
XFX Radeon HD 7950 GHZ (3gb VRAM)
8gb ram (2.5 to mc)
320gb HDD (80gb left)
Corsair cx500m
Corsair 100r
TPLink Archer T4U​

 

[jikuja]

First check your firewall most of network requests FTB launcher made failed and launcher use old date saved in hard disk. If fixing firewall does not fix pack startup enable extra launcher debugging in advanced options dialog and download new beta from http://ftb.cursecdn.com/FTB2/maven/net/ftb/FTB_Launcher/1.4.8-338/FTB_Launcher-1.4.8-338.exe Then use new launcher version to start pack and post link to new log

 

[Gokufighther]

First check your firewall most of network requests FTB launcher made failed and launcher use old date saved in hard disk. If fixing firewall does not fix pack startup enable extra launcher debugging in advanced options dialog and download new beta from http://ftb.cursecdn.com/FTB2/maven/net/ftb/FTB_Launcher/1.4.8-338/FTB_Launcher-1.4.8-338.exe Then use new launcher version to start pack and post link to new log

where do i check my firewall from... im a hardware guy, i have no idea how to make myself around any software without a ton of experience (also i updated the thread, it only does this with infinity (the other modpack i have installed is ultimate and it was fine)

 

[Gokufighther]

I just added exceptions for FTBLauncher so i will see how that goes

EDIT: Seems like it works very well, thank you for the help jikuja!