Finished the main story at this point and I'm noticing that no matter how hard I try, I can't knock up my slaves! Even at times when they're ovulating.

I've noticed in the log I've been getting the following errors: 

SCRIPT ERROR: impregnation: Invalid get index 'id' (on base: 'Nil').
          At: res://files/globals.gd:1131
SCRIPT ERROR: race_breed_compatible: Invalid get index 'race' (on base: 'Nil').
          At: res://files/globals.gd:2014

Although I'm not sure *how* to read these, I feel like they may be the culprit. Anyone have any similar happenings?

I have changed my own globals.gd file but, I don't think my changes start until after line 2051 anyway  the lines at 1131, and 2014 both match up with being able to fire those errors so I imagine that I haven't added or removed any lines before them.

Assuming the lines are the same, both errors are exactly the same thing, trying to grab data from a father person that is currently null, so the question is what is the exact situation that is firing those errors, namely who is the father

I can see a dozen or so spots where no father is provided for the first error to occur aside from potential null persons, and the second error would be a direct result of the first one as the only place that calls the second erroring function in question gets the inputs for it from the stored output of the first errored function.

Also why are methods that defaults the inputs to null if they aren't passed a value not properly accounting for what happens when they are null (coding issue not on you)

I had a similar problem. Thing is I only had the first part of the error the one in 1131 without the 2014. Now i found a temp solution to my problem, this is a really dirty fix and will probably only work if you are playing as a male. In which case all the broken kids will be yours now. Congratulations (my relatives window is starting to look pretty ridiculous)

in your global.gd file before the line 1131(game folder not appdata)

mother.preg.womb.append({id = father.id, unique = father.unique, semen = cumprod, virility = virility, day = 0,})

paste

if father == null:
father = player

your lines 1131;1132;1133 should look like so

if father == null:
father = player
mother.preg.womb.append({id = father.id, unique = father.unique, semen = cumprod, virility = virility, day = 0,})

I haven't really proof tested it, just went 80+ turns and impregnated 2 slaves. no error so far.  It might cause some pretty nasty stuff later on. ill give it some more testing later.

Possibly related bug here. Was able to get a slave pregnant but the child is bugged. Shows whatever character you had selected before selecting the child or, if its a freshly loaded game, will show a blank character profile with the name "Text Here"

Edit: On closer inspection it seems that this is likely more an issue with the variable "race_display":"Mixed"