Impi Unit graphics not working

[Scaramanga]

I have a Zulu mod, described here: http://forums.civfanatics.com/showthread.php?t=443662, and an important piece is not quite working: the Impi unit graphics.

If anyone would like to enlist to help me get this working I'd be very grateful. I can start by posting the modinfo contents:

Spoiler :

<?xml version="1.0" encoding="utf-8"?>
<Mod id="731823a0-de27-4f97-ae0e-63855883f300" version="1">
  <Properties>
    <Name>Zulu Empire</Name>
    <Stability>Experimental</Stability>
    <Teaser>Adds the Zulu Empire to the game.</Teaser>
    <Description>Adds the Zulu Empire to the game.</Description>
    <Authors>Peter A. Bos</Authors>
    <HideSetupGame>0</HideSetupGame>
    <AffectsSavedGames>1</AffectsSavedGames>
    <MinCompatibleSaveVersion>0</MinCompatibleSaveVersion>
    <SupportsSinglePlayer>1</SupportsSinglePlayer>
    <SupportsMultiplayer>1</SupportsMultiplayer>
    <SupportsHotSeat>0</SupportsHotSeat>
    <SupportsMac>1</SupportsMac>
    <ReloadLandmarkSystem>0</ReloadLandmarkSystem>
    <ReloadStrategicViewSystem>0</ReloadStrategicViewSystem>
    <ReloadUnitSystem>1</ReloadUnitSystem>
  </Properties>
  <Dependencies />
  <References />
  <Blocks />
  <Files>
    <File md5="E0DF730BA74C839790ABCAA97B34035A" import="1">Art/Shaka_diplo.dds</File>
    <File md5="773329C3D0626907A3AF9F6049CB4E60" import="1">Art/ZuluAlphaAtlas32.dds</File>
    <File md5="9D47EFC5657C00847F02FA79BB694F1D" import="1">Art/ZuluIconAtlas128.dds</File>
    <File md5="B5A6E82DDAF174B7003F7386207F31CA" import="1">Art/ZuluIconAtlas256.dds</File>
    <File md5="22A5EAC9A0133BC41FF5F85DE5ED0529" import="1">Art/ZuluIconAtlas32.dds</File>
    <File md5="DF5B0BCB83AA067DCABBD9179493D7E5" import="1">Art/MapZulu512.dds</File>
    <File md5="0FF54B221E28BDD74B5AC69F25BC32E9" import="1">Art/ShakaDOM.dds</File>
    <File md5="7E652D9630204949121F350DFFB02158" import="1">Art/U_Zulu_Impi/impi_1.dds</File>
    <File md5="3D094C6B1A777A70077A29A48F9166BF" import="1">Art/U_Zulu_Impi/impi_1.fxsxml</File>
    <File md5="AC3DF6DFEAB8C312423CFB2D05FD1901" import="1">Art/U_Zulu_Impi/impi_1.gr2</File>
    <File md5="6BB5C921AB17A1A85B8FE4DEE9EE73E5" import="1">Art/U_Zulu_Impi/impi_2.dds</File>
    <File md5="908FDFD6301BC411BB561EC41870DC25" import="1">Art/U_Zulu_Impi/impi_2.fxsxml</File>
    <File md5="4271E91C2730FD23C6360D6BAC649D55" import="1">Art/U_Zulu_Impi/impi_2.gr2</File>
    <File md5="D24B5408503009FD7771879918867BBF" import="1">Art/U_Zulu_Impi/impi_3.dds</File>
    <File md5="83394A4FDD6110290076ABBD4D7875B6" import="1">Art/U_Zulu_Impi/impi_3.fxsxml</File>
    <File md5="67F538FCE1B0B5B00B018DAF1060F4DF" import="1">Art/U_Zulu_Impi/impi_3.gr2</File>
    <File md5="9195F74685E714E68BA4678508A7FEE0" import="1">Art/U_Zulu_Impi/impi_4.dds</File>
    <File md5="72BF0ABA148EB6872E4B0D2AF0F906EC" import="1">Art/U_Zulu_Impi/impi_4.fxsxml</File>
    <File md5="5DA2F58547851A2034D78BFAFAF216FE" import="1">Art/U_Zulu_Impi/impi_4.gr2</File>
    <File md5="CF217E101010D4D34A06E80F11C3AF3F" import="1">Art/U_Zulu_Impi/impi_sref.dds</File>
    <File md5="502B9ED7D34E4059FA24D5ABD74DB9EE" import="1">Art/ZuluIconAtlas45.dds</File>
    <File md5="39BEEAD9E051102B2E6753753CEA11B7" import="1">Art/ZuluIconAtlas64.dds</File>
    <File md5="006FBE9B77FD66BD40AE00CA7FB74511" import="1">Art/ZuluIconAtlas80.dds</File>
    <File md5="422EBDF97BEDC989A01809D3B5378D42" import="1">Art/ZuluLeaderIcon128.dds</File>
    <File md5="11EDCF19C385988574B6CC80B80D4253" import="1">Art/ZuluLeaderIcon256.dds</File>
    <File md5="3562DAE0B256E5CDBBA9FA92378F6402" import="1">Art/ZuluLeaderIcon64.dds</File>
    <File md5="E674AEF3ED7C04C10350D7248089EBE2" import="0">XML/Civilizations/CIV5Buildings_Zulu.xml</File>
    <File md5="3CF20FCB37C986C664BCF016BCED20A8" import="0">XML/Civilizations/CIV5Civilization_Zulu.xml</File>
    <File md5="156B52EDB7D5E8C86047071FEE9385A3" import="0">XML/Civilizations/CIV5Diplomacy_Responses_Zulu.xml</File>
    <File md5="13406DD6E001B5334F1682CC0B09A39D" import="0">XML/Civilizations/CIV5Improvements_Zulu.xml</File>
    <File md5="383729A5D29755A671C7B76F76FDB04E" import="0">XML/Civilizations/CIV5Leader_Shaka.xml</File>
    <File md5="C599A3D4028A492314B55985D3E9CB7D" import="0">XML/Civilizations/CIV5Traits_Zulu.xml</File>
    <File md5="00D606D287CE4CB674CC9FC656EDD265" import="0">XML/Civilizations/CIV5UnitPromotions_Zulu.xml</File>
    <File md5="C75113F6386424A57752AA62B75E4C5A" import="0">XML/Civilizations/CIV5Units_Zulu.xml</File>
    <File md5="51F5CDDB3FAA9308291A4523D5584D2A" import="1">XML/Civilizations/Shaka_Scene.xml</File>
    <File md5="984E9FB216F7625BC6D8F52C45250B40" import="0">XML/GameInfo/CIV5IconTextureAtlases.xml</File>
    <File md5="C8F5CA3681566C3804519D7AC86C5F0C" import="0">XML/NewText/CIV5GameTextInfos_Civilizations_Zulu.xml</File>
    <File md5="EF3704549A6371D0E36FEEEDDAD4E78E" import="0">XML/NewText/CIV5GameTextInfos_Leaders_Shaka.xml</File>
    <File md5="5365F9E317B0EB0AF166DBE0FA8F7BB3" import="0">XML/NewText/CIV5GameTextInfos_Zulu.xml</File>
    <File md5="544BD19A62F82B2C53A9FEB6CD68562C" import="0">XML/NewText/CIV5GameTextInfos_Units_Zulu.xml</File>
    <File md5="F3E0B1C54E06A17E998436B1DD04E9D5" import="0">XML/NewText/CIV5GameText_Cities_Zulu.xml</File>
    <File md5="BDD73D602A54ACBE48A1555142F76E64" import="0">XML/NewText/Civ5_Dialog_Shaka.xml</File>
    <File md5="BA25EFD57127935C4C58FDDD0EB0C302" import="0">XML/NewText/CIV5opediaTextInfos.xml</File>
    <File md5="2E10D76B6EDD379ABD65E21CEC080015" import="1">XML/Units/civ5artdefines_unitmembers_Zulu.xml</File>
    <File md5="BA1B70739C9DE389288EEF7818E97572" import="1">XML/Units/civ5artdefines_units_Zulu.xml</File>
  </Files>
  <Actions>
    <OnModActivated>
      <UpdateDatabase>XML/Civilizations/CIV5Buildings_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/NewText/CIV5GameTextInfos_Civilizations_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/Civilizations/CIV5Leader_Shaka.xml</UpdateDatabase>
      <UpdateDatabase>XML/NewText/CIV5GameTextInfos_Leaders_Shaka.xml</UpdateDatabase>
      <UpdateDatabase>XML/NewText/CIV5GameTextInfos_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/Civilizations/CIV5Traits_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/Civilizations/CIV5UnitPromotions_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/Civilizations/CIV5Units_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/NewText/CIV5GameTextInfos_Units_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/GameInfo/CIV5IconTextureAtlases.xml</UpdateDatabase>
      <UpdateDatabase>XML/Civilizations/CIV5Civilization_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/NewText/CIV5GameText_Cities_Zulu.xml</UpdateDatabase>
      <UpdateDatabase>XML/NewText/CIV5opediaTextInfos.xml</UpdateDatabase>
    </OnModActivated>
  </Actions>
</Mod>

Thanks.