Beasts and Barbarians

[SeeleyOne]

What it sounds like is that somewhere you are needing a skKnow skill that is being accessed, maybe added to with a bonus, and it does not exist yet. Maybe in the Priest edge it has a requirement for a knowledge skill.

Sometimes errors in one thing will pop up as Hero Lab accesses other things and it sees offending data, as it sounds like could be the case. I would first check that Priest edge.

If it is not there, and you cannot figure out where it is, the easiest way to find errors that you cannot find in the editor is by opening the user file with another program. Even a text editor, like notepad, will work. Personally I would use Visual Studio, but it is more likely that most people will have notepad. After opening it with another program, search for "skKnow" as that will give you a hint where it is. You could also search for other clues.