Muttles

k, so I'm trying to set up a server for me and a couple of my friends, but something goes wrong every time I try to do so. I've watched a couple of tutorials on the matter, but none of them seem to provide me with an answer to this dilemma. Basically, whenever I try to run the universal-forge thingy-ma-jiggy as the server, it doesn't bring up the console, instead creates a no-gui server, doesn't load up a world, the properties file or anything, then shuts itself down somewhat quickly, and leaves this in the logs folder: I'm not that great when it comes to strings of code or whatever this monstrosity is, so I decided to pop up here and ask for help (and probably do something blatantly wrong while trying to, but I digress).