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Edit: I just tested to only run Minecraft without the Server, going into a Single Player World and the RAM usage is going up contunously. I set the RAM usage in the Technic Launcher to 4GB, why is it then going higher than that? So I'm running a Server with the Mod Pack "After Humans" and I provided the start.bat with the Java Arguments "-Xmx 4G -Xms-1G" and in the Technic Launcher I set the maximum RAM usage to 4GB. When the Server is running it is taking around 2.5GB to 3GB of RAM in maximum but the strange thing is, when Minecraft itself is running it's starting at 2GB and is goin

This problem has just started to happen. Tekkit (and presumably all modpacks) ran fine last night. Today, I updated my Nvidia GPU and swapped from the 32 bit java to 64 bit. Upon launching, I found I could not launch any modpack what-so-ever. The launch would hide itself and after a moment, it would come back, having not even launched Minecraft. Vanilla and optifine work well, if that helps find the problem. PasteBin logs from one failed run: http://pastebin.com/p1ANF4cM If I need to put anything else here, please ask and I will. Thank you.