Interesting - you have succeeded at the most difficult part but not the easier part. May I ask what difficulties that you are having with the .dat file?
There were three differences from the tutorial:
- I've been trying to construct this as an add-on, since you obviously didn't want it in the main download (and I understand that, since the point of Extended is supposed to be greater realism). The tutorial assumes you're building the whole pakset, and I couldn't work out the correct makeobj parameters until the wiki came back up.
- I wasted an hour trying to make this fit into the livery system, before concluding that the feature is incompatible with add-ons.
- There seem to be two different systems being used for images (one using N/S/E/W and one using only numbers), which confused me.
All in all, a useful learning experience.
Anyway,
the pak files are now available if anyone ever wants them. The only part that can't be separated as an add-on is the translation text. I will try to make a pull request for this in the main repository.