Graphical Error Creating Custom Promotions

[Crighton]

I created a series of custom promotions, got everything working fine except for one small thing I can't figure out.

The problem is in that area which displays the units on the tile and what promotions they have. When a unit has one of the custom promotions and you scroll over the unit, there is that irritating purpley box which appears where the promotion button button should be. All the other regular promotions appear just fine.

It doesn't appear anywhere else, not in the civilopedia, the promtions selection bit, nowhere. Everything else about the promotions works perfectly.

It only appears when you scroll over the unit. Posted below in the spoiler is the code from my xml promotions file for one of the promotions, if I can get the one working I can get the others.

Any help would be appreciated.

Many thanks in advance,

~Crighton

Spoiler :

<PromotionInfo>
<Type>PROMOTION_Heli1</Type>
<Description>TXT_KEY_PROMOTION_Heli1</Description>
<Sound>AS2D_IF_LEVELUP</Sound>
<LayerAnimationPath>NONE</LayerAnimationPath>
<PromotionPrereq>NONE</PromotionPrereq>
<PromotionPrereqOr1>PROMOTION_COMBAT1</PromotionPrereqOr1>
<PromotionPrereqOr2>NONE</PromotionPrereqOr2>
<TechPrereq>NONE</TechPrereq>
<StateReligionPrereq>NONE</StateReligionPrereq>
<bLeader>0</bLeader>
<bBlitz>0</bBlitz>
<bAmphib>0</bAmphib>
<bRiver>0</bRiver>
<bEnemyRoute>0</bEnemyRoute>
<bAlwaysHeal>0</bAlwaysHeal>
<bHillsDoubleMove>0</bHillsDoubleMove>
<bImmuneToFirstStrikes>0</bImmuneToFirstStrikes>
<iVisibilityChange>0</iVisibilityChange>
<iMovesChange>0</iMovesChange>
<iMoveDiscountChange>0</iMoveDiscountChange>
<iAirRangeChange>0</iAirRangeChange>
<iInterceptChange>0</iInterceptChange>
<iEvasionChange>0</iEvasionChange>
<iWithdrawalChange>0</iWithdrawalChange>
<iCargoChange>0</iCargoChange>
<iCollateralDamageChange>0</iCollateralDamageChange>
<iBombardRateChange>0</iBombardRateChange>
<iFirstStrikesChange>0</iFirstStrikesChange>
<iChanceFirstStrikesChange>0</iChanceFirstStrikesChange>
<iEnemyHealChange>0</iEnemyHealChange>
<iNeutralHealChange>0</iNeutralHealChange>
<iFriendlyHealChange>0</iFriendlyHealChange>
<iSameTileHealChange>0</iSameTileHealChange>
<iAdjacentTileHealChange>0</iAdjacentTileHealChange>
<iCombatPercent>0</iCombatPercent>
<iCityAttack>0</iCityAttack>
<iCityDefense>0</iCityDefense>
<iHillsAttack>0</iHillsAttack>
<iHillsDefense>0</iHillsDefense>
<iKamikazePercent>0</iKamikazePercent>
<iRevoltProtection>0</iRevoltProtection>
<iCollateralDamageProtection>0</iCollateralDamageProtection>
<iPillageChange>0</iPillageChange>
<iUpgradeDiscount>0</iUpgradeDiscount>
<iExperiencePercent>0</iExperiencePercent>
<TerrainAttacks/>
<TerrainDefenses/>
<FeatureAttacks/>
<FeatureDefenses/>
<UnitCombatMods>
<UnitCombatMod>
<UnitCombatType>UNITCOMBAT_HELICOPTER</UnitCombatType>
<iUnitCombatMod>10</iUnitCombatMod>
</UnitCombatMod>
</UnitCombatMods>
<DomainMods/>
<TerrainDoubleMoves/>
<FeatureDoubleMoves/>
<UnitCombats>
<UnitCombat>
<UnitCombatType>UNITCOMBAT_GUN</UnitCombatType>
<bUnitCombat>1</bUnitCombat>
</UnitCombat>
<UnitCombat>
<UnitCombatType>UNITCOMBAT_AIR</UnitCombatType>
<bUnitCombat>1</bUnitCombat>
</UnitCombat>
</UnitCombats>
<HotKey/>
<bAltDown>0</bAltDown>
<bShiftDown>0</bShiftDown>
<bCtrlDown>0</bCtrlDown>
<iHotKeyPriority>0</iHotKeyPriority>
<Button>Modules/Custom Units/Gunships/Promotions/Heli1.dds</Button>
</PromotionInfo>