Running Wild not being cast once character trains Journeyman Riding. I have it set to priority 4, and no other ground mounts besides the Chauffer, which is priority 1. Summons Chauffer every time after training to 100% ground speed.

Hmm that's weird, it's hard to imagine how the riding skill would make any difference.

Can you please trigger the error and paste the bug report info:
https://github.com/xod-wow/LiteMount/wiki/Report-Bug

Thanks. This is going to be a bit tricky for me to debug since I don't have any worgens, let alone some with riding and some not.

If you are able can you also send me the output of

/dump IsSpellKnown(33388)

and

/dump IsSpellKnown(33391)

and let me know whether you know or don't know Journeyman Riding on that character.

After all that I think I know what this is, but if you are able to run those dump commands that would really help.

Can't reproduce today, so I can't get the bug report info in game, but here's the dump screenshot. I'm assuming the issue is transient.

I think what probably happened is you learned Expert Riding as well. Seems like you forget the previous riding spell when you learn a new one.

An overall fix for this will be in the next release.