[OS X TeX] Problems with utf-8

[Luis Vitorio Cargnini]

someone knows how to fix this problem :
Une 00E9motion est cr00E9atice d’un changement d’00E9tat dans le monde  
du vivant -
00E9mouvir = mettre e

My Tex start to warn about UTf-8 characters suddenly. Someone knows  
the fix ?
thanks.
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