[Can't load any mod packs.]

So I wanted to play the Super Modded Survival mod pack from Captainsparklez's youtube series. I installed the modpack just fine and then I installed 64 bit java in order to allocate more ram to the game. I ended up allocating 7 gigs to the game (I have 8) and it still won't load the mod pack so I figured it was just the modpack and so I tried to load another modpack and none of the other packs work

[Issues when trying to load a modpack]

So I was playing the Ultra Modded Survival modpack and everything was fine but when I went to go into a different dimension, the window closed and the launcher came back up as if I closed the window. Now when I try to load the modpack, it loads all the way to the main menu then it freezes and the window closes and the launcher comes back up. What's causing this? I have enough ram to run the game so I don't understand what's happening

[Issues when trying to load a world]

So I was playing the Ultra Modded Survival modpack and everything was fine but when I went to go into a different dimension, the window closed and the launcher came back up as if I closed the window. Now when I try to load the modpack, it loads all the way to the main menu then it freezes and the window closes and the launcher comes back up. What's causing this? I have enough ram to run the game so I don't understand what's happening

[Launcher can't install mod pack]

Here you go Captain Obvious: http://forums.technicpack.net/tracker/issue-1797-launcher-cant-install-mod-pack/?gopid=8801#entry8801

[Launcher can't install mod pack]

I was playing the Ultra Modded Survival mod pack and it was lagging and not loading things so I went to re-log and the mod pack wouldn't load so I went to re-install it and the pack wouldn't install and an error message came up saying:

 

Error installing the following pack: Ultra Modded-Survival

 

An error occurred while attempting to delete 'C:UsersJeremyAppDataRoaming.technicmodpacksultra-modded-survival-packmods1.6.4CodeChickenLib-universal-1.6.4-1.0.0.6.2.jar' from the cache'

 

Please check your system settings.

 

It was working perfectly a few minutes ago and now I can't play it.

[Launcher can't install mod pack]

I was playing the Ultra Modded Survival mod pack and it was lagging and not loading things so I went to re-log and the mod pack wouldn't load so I went to re-install it and the pack wouldn't install and an error message came up saying:

 

Error installing the following pack: Ultra Modded-Survival

 

An error occurred while attempting to delete 'C:UsersJeremyAppDataRoaming.technicmodpacksultra-modded-survival-packmods1.6.4CodeChickenLib-universal-1.6.4-1.0.0.6.2.jar' from the cache'

 

Please check your system settings.

 

It was working perfectly a few minutes ago and now I can't play it.

[How do I allocate more RAM to my launcher?]

So I'm trying to run the Ultra Modded Survival modpack from CaptainSparklez's YouTube channel and I can run it up until I go to load the world and then it runs out of memory. I have a total of 5 gigs of ram on my computer but the launcher will only allow me to allocate 1 gig... Is there any way I can increase that limit?