What does this mean?

(XML/Units/Civ5Units.xml): Duplicate <Set> elements are not allowed.

Now if your going to say you have a Duplicate <Set> in your Units.xml the answer to that is nope checked that

Now when I take these lines out the mod works:

<Where UnitType="UNIT_PARATROOPER"/>
<Set UnitClassType="UNITCLASS_SPECIAL_FORCES" />

But I don't have that anywhere else in my mod.

What else could it mean?

Regards

Riker13


*Edit. Sorted it was this:
<Update>
</Update> (The / should be on the top)
<Where UnitType="UNIT_PARATROOPER"/>
<Set UnitClassType="UNITCLASS_SPECIAL_FORCES" />
</Update>

It's hard to say seeing only a small piece of code, if you post your entire XML file (or at least a larger part of it) if will be easier to find the error.

Your "fixed" version isn't correct. There's something else wrong with that file.