CyanideSandwich

I think I may have figured it out. In one of my chests at home, I found some "Radioactive Material". I don't know if that's what was causing the radiation, but it's since been removed from the premises.

Sometimes when I'm mining pretty deep, I get the "Radiation" status effect, which effects health in a similar way to the "Wither" effect. Why does this happen? Does it mean I'm close to uranium or something? I play single player, so it can't be from another player's nuke.

Launcher Version: Latest (as of 11/12/2012) Operating System: Windows 7 64-bit Java Version: 7 Antivirus Program: Norton Antivirus Description of Problem: I've been using Technic since about March of this year without any major issues, but as of today when I try to open the launcher, this happens: It doesn't happen with any other program. I've re-downloaded the launcher, but it makes no difference. Error Messages: Error Log: