Then there's an error in the config file within the livery.
If i place liveries in: C:\Users\Quicksilver\Saved Games\DCS.openbeta\Liveries\M-2000C\
they show up as intended, however when i start messing with the desc file they don't. If you get a chance, upload it and i'll try fixing it.
You might want to keep the first post updated as well with the latest download. I think it still links to one of the older packs i previously made.
I used the B2O Gdrive for it so all i had to do is overwrite the older file and it would count as an update, not having to change the links to the latest pack each time you add something saves you from quite some work with the rate that Jeff is blurting out liveries xD