Problem Server Start-up Error

[DJBristow]

Hey, guys.

I've been running a private server that my friends and I have been playing on for about 5 weeks now. Until now, it's run without issue. However, now when I try to start up the server, the CMD opens then instantly closes. I haven't altered anything and I can't seem to see why it won't start up like normal.

We play on the Unleashed modpack. I don't really know what other information to give, since I haven't changed anything from the default settings.

Here is a pastebin of my log: http://pastebin.com/5kQLmX0X

Any help is greatly appreciated,
DJ Bristow

 

[Connor Gavitt]

Do you use a server wrapper? What OS do you have, what are you server specs and what modpack? A first glance it seems like something is stopping the server like /stop.