please help me

[spencer]

something happened and i dont know what it is, but i need help....i cant reinstall the game! well first the game was working fine. i donloaded the SAMI ..and started adding mods...i added about 9 before i even tryed to play it....but when i did try to play it it would only load half way and retern me to windows...so i deleted everything that had something to do with sanandreas on my pc....now every time i try to reinstall the game it gets a litle more than halfway through and says exactly this:

Feature: Grand Theft Auto: Sanandreas Game data

Comonent: Models

File: D:\data3.cab

Error: Data error (Cyclic redundancy check).

please help me on this

ps:yes i do have the secound edition, and it was bout from the store about a week ago