hello, I think there is a bug with the mod that makes the player unable to impregnate other slaves, I've tried with all of my female slaves but it just doesn't work, but if another male slave does it then the female is almost 100% going to have a child, I can still have kids in the unmodded game so I think this is a bug, I've only changed the saves to change the base stats for the player and I don't think it has anything to do with that
Viewing post in Aric's Expansion Rebred
I just tested with a new progress and the 1.7 version of the mod from this topic and had no difficulties impregnating 2 female slaves within a week. Thus there must be another factor preventing you from impregnating your slaves. While editing the save file can produce any number of problems, crashing the game is the most likely problem and severe infertility is probably the least likely, but I can't rule out that possibility. There are 4 possibilities (besides contraceptives) that I can think of which could explain it.
If you downloaded the mod from the GitHub within the last 2-3 months, then you are using an unstable version of the mod and your progress likely has severe data corruption. The solution is to download version 1.7 from the beginning of this topic and start a new progress.
Many people fail to install the mod properly, the game appears to run at first but some features like exploring will be significantly broken. Any progress created with an improperly installed mod will have severe data corruption. The solution is to re-install the mod (the Discord linked in the first post is the best place for help with this) and start a new progress.
If you started the save data using a prior version(1.6 was released in a somewhat unstable state) and continued using it with the current version, then you may have some data corruption left over from the previous version. These tend to be fairly minor but still a needle in a haystack. It may be possible to fix the save data by comparing it to a new progress. The Debug mod can sometimes help with identifying what data is corrupt.
I have not tried out every possible pairing of races, fertility traits, and testicle sizes so I cannot rule out the possibility that there is a bug for certain combinations. This mod(as well as Strive itself) is notorious for appearing to work fine until someone tries an unfortunate combination of things. Diagnosing something like this would likely require you share your save file either here or through Discord. If such an issue is found, then changes can be made to the mod files and you can continue playing your save data.