Misplaced mob crashing my world

[The classless]

This Has been happening for a few weeks now but about every two weeks I get this misplaced mob popping up in the ftb log over and over again which causes me a crash please help

 

[Ashzification]

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