I'm unfamiliar with how the enthusiasm /one true hobby stuff works since I don't have FT yet. So the read me file doesn't make much sense to me but this part
4/ Sims will only gain enthusiasm in a hobby if they have a minimum primary interest value of 1 point. This does not apply to the OTH.sounded pertinent to your request
Is zero enthusiasm gain better than too easy enthusiasm gain?
Maybe tunaisafish will see your post at some point and respond, maybe the other link is just broken for today, maybe someone else will upload the file you really wanted.