OPERATION FLASHPOINT CRACK UPDATE V1.10 DONT WORK PLEASE HELP ME

Hi all, i have a little problem,i downloaded the crack update but when i try to install it it show me an error message :
"Operation Flashpoint is not installed in your computer or installation is corrupted"
My ofp have all the addons and the win2000 crack.
Please if someone have an idea or solution tell me.
Thanks
-AnGuS-