i can help with a couple of things.

the log file is inside the folder that you installed VV to. the file is called "ldwlog."

females can start having babies at age 18. how long they live mainly depends on what level of medicine you have. if i remember correctly, with the first level of medicine they live till about age 60, give or take a few years (someone correct me if i'm wrong here). they live about 10 more years for each level of medicine you have, generally speaking.

as far as the tech points not increasing, i have no idea. i have 4 different games going, and i've found that if i leave one running but switch to another, the villagers on the first one won't collect any food. i've woken up to them severely weakened or dead from lack of food, even though there's plenty of food available for harvesting/foraging. i have to put the others on pause and only run one game at a time.