spacytoast

Good afternoon, my name is SpacyToast. I have encountered this problem too, and after reading this topic/forum/stuff. I have found a solution. If you have downloaded and installed the 1.0.5 server and client and encountered this issue you simply need to create a new folder, put the server files in it. then move, copy, or simply create new world file. here are the steps below, hopefully it wont be too confusing.
 
1. create a new folder ( right click on the desktop. pan over new. then click folder. i recommend you name it something like server1.0.5)
 
2. open the Zip archive you downloaded for the server files. (default location for downloads is the downloads folder on your C:)
 
3. copy the files in the archive and place them in the new folder you created earlier
 
4. after those files copy over, open your old 1.0.5 server. the one returning the disconnected by server. copy your "world" folder and paste it into the new folder you created earlier.
 
5. run the server, let it fully load (if you are hosting it on the computer you are using then use 'localhost' in the server IP via minecraft to connect. just to make sure it works.)
 
6. stop the server ( you can do this by typing /stop in minecraft if you are oped. or stop via the cmd [command prompt] for the server)
 
7. edit the server.properties folder, make sure its set up the way you want it to be so other players can connect externally.
 
8. if you want to change the configs to your liking open the config folder in the server folder you created earlier, open what you want to change in notepad. ( I recommend notepad ++)
 
9. save and close the config from notepad and your good to go.
 
10. play Attack of the B-team for hours on end. hope this will help everyone out!
 
if you want to create a new world just run the server. dont copy the world folder over to the new folder. 

If you ports are forwarded you do not have to fill in an ip in your properties, i recommend leaving the "ip=" Blank anyway in case you have a dynamic ip.