[Q] Error in OTA update topic

I installed this rom:

http://forum.xda-developers.com/show....php?t=2596176
140303 release version. I can`t update with the 090310 ota release. Safestrap indicates:
error in file_contexts. Unexpected contents.

I don't modified this file. ¿Can i fix this problem or must format the phone..Again:crying:?

Thx for helping