oPepper

Hi, I am currently trying to make a modded server for me and and a friend. I have been running my own servers for a while and I've done modded before with no problems. This time I'm using minecraft 1.5.2 to play and I'm trying to make a forge server for us to play on. When I am setting the server up I get a java exception everytime. I've never had this happen to any of my servers before. If anyone knows how to fix this , help would be great