Stuck on the ground with the riding animation.

Tried everything, all the Unofficial patches (Skyrim, Dawnguard, Hearthfire, Dragonborn)
Dragons on the island, , fast traveled back to Tamriel and tried multiple dragons there,
even tried "placeatme" ("Bend Will", Dragons follow you when you fast travel without them and fight for you, also appears
that you can not have more than one Dragon under your will).

So, the main quest is not doable without a Dragon mount isnt it ??

Ie, Game breaking bug ?

The problem comes from a mod that installed a dragon skeleton. Look for it in meshes/actor/dragon/character assets and delete it (make a .rar of it just to be safe). It shouldnt result in any bugs

Which mod? I'd like to avoid this when i start playing the DLC tonight.

Im not sure, its no problem just to go in and delete the file from the directory and you're set.

I believe it may be a mod (BUT IM NOT SURE) that makes the dragon corpses behave natural instead of having a seizure as they die. Its not game breaking if you delete that file.

Thats it !!! ...I do not have any "Dragon" mods but apparently a mod did place that SKELETON.NIF file there, Thanks Randy.