Here is the problem the spell reference is incorrect

            <GameModifier>
                 <ModType>Unit</ModType>
                 <Attribute>UnlockCombatAbility</Attribute>
                 <StrVal>Bleed</StrVal>
                 <Provides>Allows the unit to use the Bleed special ability</Provides>
             </GameModifier>

That should be

            <GameModifier>
                 <ModType>Unit</ModType>
                 <Attribute>UnlockCombatAbility</Attribute>
                 <StrVal>Bleed_Ability</StrVal>
                 <Provides>Allows the unit to use the Bleed special ability</Provides>
             </GameModifier>

This is to match the spelldef