Steps are not progressing when completed but the guide will jump forward to catch up on a /reloadui. However, doing basically anything, from quest progression to combat, triggers the following error. Tried several /reloadui as well as re-installing, no luck.

246x WoWPro/WoWPro_Broker.lua:2619: attempt to index a nil value
[string "@WoWPro/WoWPro_Broker.lua"]:2619: in function NextStep' [string "@WoWPro/WoWPro_Broker.lua"]:1476: in function <WoWPro/WoWPro_Broker.lua:1432> [string "=[C]"]: ? [string "@Ace3/AceBucket-3.0-4/AceBucket-3.0.lua"]:69: in function <Ace3/AceBucket-3.0/AceBucket-3.0.lua:67> [string "@Ace3/AceBucket-3.0-4/AceBucket-3.0.lua"]:85: in function func'
[string "@Ace3/AceTimer-3.0-17/AceTimer-3.0.lua"]:57: in function <Ace3/AceTimer-3.0/AceTimer-3.0.lua:50>

Tried re-enabling once I'd unlocked the Maruuk Centaur faction out of curiosity, no magically fixed guide/addon. Alas.

Same error here, hoping for a fix, fantastic addon

there is a fix posted on discord. you need to place this file in Interface\AddOns\WoWPro_Leveling\Neutral
https://cdn.discordapp.com/attachments/1046991697860628500/1047025184349106217/DF_Ohnahran_Plains.lua

Appears to be fixed (at least for me) with WoWPro 2022.11.29.A. Huzzah!