I'm going to list the errors I've found while my pics of them are uploading. Haven't gotten to much unit descriptions yet, but I've been doing a lot of campaign testing.
1 - There are two "Shrines to Donar". One gives farming and growth bonuses (+increase in goods at lv3). The other gives +1.5 growth the first two lvs (no increase), and then drops the growth at lv3 and replaces it with "increase in goods".
2 - Misspelling of Frejya/Freyja in her temple chain descriptions/titles.
3 - High King's Hall (lv3 of base buildings) gives the Improved Generals' Bodyguards bonus.
4 - Ships have no description or unit name (both are Unlocalized Placement Text). Both work fine in battle and don't cause CTD.
5 - Stone Wall building picture is wrong/out of place: the picture is the Roman Stone Wall, not barbarian.
6 - A foot unit has Unlocalized Placement Text as its name and description. Works fine in battle, see picture below to identify it.
7 - The "Law Buildings" line gives no further bonuses after the +5% you get with tier1. Thus, "Halls of the Chosen" is no different than "Townspeople", except in the fact that it costs much, much more.
8 - In the "Towns and Cities" line, the final tier "Cities" gives jumps -2% pop growth from the 4th tier "Town". Might be intentional, but it just seemed a bit odd to me.
9 - BIG ISSUE: While playing campaign, I found that all the buildings in one of the settlements I captured all cost 1 single denar to build. When I reloaded the game, that city was fine, but I immediately found that I had the same issue in another one of my cities.
10 - In addition, the lower building costs are fine, but they seem to be considerably lower in the settlements I have captured (ie, outside of the two I started with). I don't have any specific side-by-side examples right now though, so I'll investigate it further and post my findings at a later date.
Pictures:
Shrines to Donar:
Shrine to Freyja/Frejya:
High King's Hall:
FIXED: Boats:
Stone Wall:
FIXED: Unit w/ Wrong Description + Name:
Law Building (Halls of the Chosen w/ +5% order):
Cities Bonus:
FIXED: 1 Denarii Buildings Bug: