I am trying to use the Modded Network Launcher, and it will not let me change the RAM usage. I can physically change the number and save it, but when I try to launch any of the downloaded servers, the launcher window disappears, then reappears without actually launching Minecraft. I can launch the game with one Gigabyte, but that isn't enough to actually run it well. I'm not sure, but it could be that I don't have an updated Java version. If anyone could help, that would be great.