Why does the game keep telling me the Compressed file isn't compatible with my setup's .cab during installation?

It's during the middle of the Compressed.bsa installation

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Metacritic Score9454 reviews
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GameSpot Walkthrough

The Elder Scrolls IV: Oblivion Walkthrough
GameSpot's Walkthrough to Oblivion features walkthroughs for the main quest and all the guild quests, as well as plenty of tips and hints!
- Go to Online Walkthrough »

Walkthroughs & FAQs

Type	Name	File Size
FAQ/Strategy Guide	FAQ/Strategy Guide by C.Lee	233K
FAQ/Walkthrough	FAQ/Walkthrough by Brokaliv	660K
Other	Character Creation Guide by Haeravon	142K
Other	Alchemy Guide by zero001349	40K
FAQ/Walkthrough	FAQ/Walkthrough by TheGum	430K
Other	Magical Stone Locations by Idiosyncrat	163K
Other	Anvil City Map by Idiosyncrat	71K
Other	Enchanting Guide by Idiosyncrat	62K
Other	Bravil City Map by Idiosyncrat	39K
Other	Diseases Guide by Idiosyncrat	23K
Other	Ancillary Imperial City Districts Map by Idiosyncrat	51K
Other	Skingrad City Map by Idiosyncrat	52K
Other	Bruma City Map by Idiosyncrat	38K
Other	Alyeid Well Locations Map by Idiosyncrat	151K
Other	Buyable Houses Guide by Idiosyncrat	18K
Other	Cheydinhal City Map by Idiosyncrat	55K
Other	Bestiary by Idiosyncrat	75K
Other	Primary Imperial City Districts Map by Idiosyncrat	148K
Other	Leyawiin City Map by Idiosyncrat	45K
Other	Chorrol City Map by Idiosyncrat	45K
Other	Side Quests Guide by Idiosyncrat	255K
Other	Wayshrine Locations Map by Idiosyncrat	174K
Other	Skill FAQ by Belfento	75K
FAQ/Walkthrough	FAQ/Walkthrough by Widgeon Infantry and A I e x	407K
Other	Secrets/Easter Eggs FAQ by TheSacredRing and moshaspartan2	45K
Other	Trainerless Skill Training FAQ by Sora4488	37K
Other	Arena Quests FAQ by Freddy_Jade	27K
Other	Blackwood Map by BraindeadRacr	124K
Other	Hard Difficulty Character Guide by szajin	63K
Other	M'Aiq the Liar Guide by htorniS	24K
Other	Book Guide by Shadow.	1729K
Other	Downloaded Content FAQ by NightmareHunter	100K
Other	Item FAQ by Shadow.	433K
Other	Buyable Spell List by Billy Black	66K
Other	Reference Guide by Naranek Angmar	529K
FAQ/Walkthrough	FAQ/Walkthrough by Xiamut	758K
Other	Powel Levelling Guide by omgItsHorde	19K
Other	Crime/Punishment FAQ by XBassXUmbraX	48K
Other	Bravil: Test Of Patience Solution by AWing Pilot	36K
Other	Character Build FAQ by PapaGamer	165K
FAQ/Walkthrough	FAQ/Walkthrough by PapaGamer	712K
Other	Combat Guide by TommyGuner	26K
Other	Creatable Spells FAQ by Clarinet_Hawk	26K
FAQ/Walkthrough	FAQ/Walkthrough by ghostmixerdj	479K
Other	Vampire FAQ by Joshs Name	20K
Other	Ayleid Statue Guide by WhoGuru	23K
Other	Skill Book List by BlackMist27	13K
Other	Quest Guide by WhoGuru	95K
Other	Alchemy Guide by dukeblue4life22	37K
Other	Cyrodiil Map by myforwik	162K
Other	Daedric Shrine Quest Guide by WhoGuru	46K
Other	Dark Brotherhood Guide by Cerbius666	40K
Other	Nirnroot Location Gude by Cerbius666	18K
Other	Detail Stats/Leveling Guide by MichaelCrosato	203K
Other	AddItem Code List by DarkHarted	139K
Other	Thieves Guild Guide by imadeaguide	111K
Other	Mages Guild Guide by imadeaguide	108K
Other	Stealth FAQ by QuikSilver989	29K
Other	Doomstone Guide by hronk	6K
Other	Balanced Character Creation Guide by Brynne	190K
Other	Main Quest Guide by BlackMist27	42K
Other	Fighters Guild Quest FAQ by BlackMist27	16K
Other	Gold Coast Map by TwistidSoul	38K
FAQ/Walkthrough	FAQ/Walkthrough by Neo_Terran	57K
Other	Dark Brotherhood FAQ by TwistidSoul	65K
Other	Trainers Guide by eldin2003	13K