Wagstaff Game Crash

I ran into this bug where I seem to be missing an animation of Wagstaff missing a mount animation every time I try to start up a new world as him. I've tried re-downloading the interior beta again to try and fix this, but it didn't work. I'm not sure what could've caused said animation to go missing, as I was able to start off a couple of worlds as him before this started occurring. I tested with other characters to be sure there were no similar issues. I'm not sure if there was something I must have did accidentally internally or if a mod I used could've caused this.

Here's the screen cap of the error itself:



If there's something I could do to fix this or if others have had a similar problem, please let me know.