So I downloaded the Metroliner for T:ANE and its dependencies, but the only things that comes up as faulty is the horn. Can someone help?
Welcome to the forums.
If you're talking about a missing dependency, you can substitute that horn with another.
Find a horn you like either built-in, or download one from the Download Station (DLS).
Write down the KUID number for the horn.
On the faulty Metronliner, right-click and choose Open... and then Config.txt.
You will need to do this part twice...
Find the line that says hornsound <Kuid:xxxxx.yyyy>
Replace that Kuid with the one you wrote down.
Scroll down to the bottom....
Look for kuid-table.
Look for the same kuid again and replace it there as well.
Save and close the config.txt file.
Submit the asset.
(Fingers crossed there's no error), and you should be all set from there.