Unable to uninstall Warlords

[Fiat BIS]

Hi

A while ago, I was trying to uninstall Civ 4 / Warlords / BTS from my laptop (ACER Aspire 5920 with Vista) and though I was able to uninstall Civ 4 / BTS, I always appear to run into the following issue with Warlords (despite clearing everything that is not in Programs and Features):

An error (-5001 : 0xffffec75) has occurred while running the setup.

Please make sure you have finished any previous setup and closed other applications.
If the error still occurs, pleace contact your vendor: Firaxis Games
(##IDS_PRODUCT_URL##).


Detail>>

Error Code: -5001 : 0xffffec75
Error Information:
>SetupNew\SetupDLL.cpp (123)
PAPP:Sid Meier's Civilization 4 - Warlords
PVENDOR:Firaxis Games (##IDS_PRODUCT_URL##)
PGUID:3E4B349F-10B5-4586-9D99-489A90A8B228
$12.0.0.49985
@Windows Service Pack 2 (6002) BT_OTHER 12752.38

Note - I've tried reinstalling Civ 4 & Warlords before uninstalling both though even that has not removed Warlords from my laptop.