I got problem with rez files :@?? Help

When i load CrossFire.exe and then i click "START" there's all fine but an error came to me saying :

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=.
-HGWC |
-FILE IS CHANGED: W[2007]L[0] |
-rez\RF017.REZ |

---

'
in the folder of CF ! the file RF017.rez exists but i think is the old one !


Someone help me :S