my server keep shutting down every 1 hours

http://www.ilbe.com/files/attach/new/20131224/12247466/600311096/2605872635/5cca5162de2366b03512859a1ef2680b.png

like this
when i open my server, its working fine at the first time
but almost 1 hours later that red messages just show up and lose my server connection and shut down server.exe
whats the damn matter??


(User was banned for this post ("missed the servers subforum" - postal))