Problem Server Crashing when player joins?

[FABL3D]

I am currently hosting a Minecraft Infinity FTB server and I've been able to play on the same computer with up to 3 of my friends. One of those friends on the server decided to leave the general area where everyone else was and as he was adventuring around the server crashed and every time he joins the server crashes getting a crash report. I am currently using Windows 8, hosting off of my own computer that I use to play on the server, Playing Minecraft Infinity 1.0.1 with no added mods. I currently believe that this is a RAM problem possibly caused by no ram allocated to my Server. This is my crash report; http://pastebin.com/7VyNcKWQ

 

[93metaman39]

I have that problem as well, and I would love to see it fixed for my and my friends' sake.