Internal Server Error

[Grayfox2100]

So I was in a Mystcraft age on a server my computer was hosting when my computers power cord was pulled. My computer shut down but when i restarted the server i got a message saying disconnected from server. the server window said "java.lang.NullPointerException" I tested my other single player worlds and they launch perfectly. its only the multiplayer server that fails. Does anyone have a solution for this?

 

[Ashzification]

*Warning: Generic Post*

Please follow these steps exactly: http://desk.feed-the-beast.com/index.php?/Knowledgebase/Article/View/9/0/basic-troubleshooting
This is to rule out any issues with your client setup.

If you continue to have trouble, please post your complete client-side console log in debug-mode to pastebin.com and link your paste URL here.
To find your logs: http://desk.feed-the-beast.com/inde...29/1/what-log-do-you-need-where-can-i-find-it
If you are trying to show a screenshot, please share the image on an image hosting site (such as imgur.com).

If you have already completed some variation of these steps, please just humor me and complete the steps, exactly as listed.