n0tlisted

I restarted and the launcher loaded up, and I was able to log in. But right after the Mojang logo it goes white and stays there. I was able to play it last week but I decided to load up the Sphax PureBDCraft texture pack and now it doesn't work. If that's is what is causing the trouble then how do I remove the texture files when I can't get the game to even start?

Launcher Version: 3.1.2 Operating System: Windows 7 Java Version: jre-7u5-windows-x64 Antivirus Program: McAfee Description of Problem: *Unhandled exception has occurred in your application.The process cannot access the file because it is being used by another process. This is what pops up when I open TechnicLauncher, and says I can either Continue which does nothing or Quit. I have already gone into McAfee to allow Technic to do as it pleases. I've also uninstalled and re-installed many times. I had it working yesterday and was having some fun then I made the choice to add the Sphax PureBDCraft texture pack. It caused minecraft to crash and now I can't get back on to play with these awesome mods Please help Error Messages: Unhandled exception has occurred in your application.The process cannot access the file because it is being used by another process. Error Log: Don't know where to find it