I'm at a loss at what to do. Call me anal, but I've always updated to the latest patch. I've deleted all my caches, moved my Mods folder, DCCache folder, and saved games to another location. Hell, I even removed my .dll file. Even before I did any of those, I ran MTS' Sims3 Dashboard to clear anything that might conflict. I try patching, and it fails due to "Invalid File Found." Never had it happen to me before, launcher's always been pretty good at updating patches and it's working with a bare game. It's probably right in my face, but T-bag me anyway.

Think you can Ctrl + Shift +C in game and type  "setconfig enabledebuginteractions on" (remember, no quotation marks) manually if you don't want to change the config file also.

I actually have this mod installed. The Uber taboo + No Jealousy + Polygamy is what I'm using but there are still no "romantic" interactions between siblings. In my case, brother and brother (I am a sick, sick twisted girl) The only way I was able to knock up one brother was by the NRaas Pollinator. But as mentioned above, I am a sick sick girl and I want the romantic interactions between the two and I am unable to get them even with that mod installed.