I got the World of Minecraft yesterday, and wanted to check it out on the server I'm hosting. I got in just fine, and the cmd.exe showed that I was online on the server. but for some reason the changes I made in game didn't get saved, eventhough my cmd.exe said the "Level saved! Load: 1/16"

Furthermore it appeared that others couldn't connect to the server using World of Minecraft if I was on, which is weird since there's 2 people already on the server who use it.

This is really annoying me, so I was hoping that there is an easy way to fix this.