Hey guys!
I have a solution for solo woohoo : Well indeed, in the build 400, you can't use object directly for solo action BUT I was thinking about an alternative and it actualy work.
To use objects for solo woohoo, start an interaction, click on your active and launch a teasing dance for example. After that, when the animation running, click on an object of your choice and select woohoo continue, VOILA, you can select your favorite position without any trouble (I was trying to solve that issue for modeling career and woohoo selfie, now, I finaly can do the opportunity!).
This is not perfect, but, at least it is a good way to counter that bug and tell him to go f*** themselve!
Cheers!
PS: sorry for my english by the way, this is not my maternal language and I hope my explanation is understandable.
PS 2: So, after running some tests, this tips didn't work for woohoo selfie infortunately. You can launch the animation, but no picture are taken at the end.
PS 3: Well, I don't know how or why, but today, woohoo selfie actualy work perfectly, maybe it's because I have cleaned cache file today ... :/