Bit of an essay here, sorry.
Tamago Fertility Clinic v 1.05 has replaced v 1.04 in the downloadable list.
I very strongly advise you to replace any earlier version with this one, as in addition to new items the methodology has been revised to remove a source of errors. A clean save would be a really good thing, but if you cannot/don't want to do that, then do the following, or the new version will have no chance of functioning correctly.
In your current game, open the console and typ