@Veteraan
The Elven reforging for the HE works in two stages.
The first stage is achieved when holding certain settlements and Elrond is alive. By completing this stage the script will unlock the ability to build the two structures required to complete the reforging. You will get an event scroll when this occurs.
Additional settlements will also have to be acquired to complete the reforging.
Check the ancillary for Elrond and make sure that the settlements required are all controlled.
IIRC this requirement is also in the readme.txt file.
It is possible that one or more settlements are incorrect or have been omitted from the ancillary, I will have to verify this. With the constant changing of the map and settlements it becomes very difficult to get every script correct the first time.
If in doubt, conquer more settlements.
The script should fire if the required settlements are held.