Tech support has been great. I have tried all I could. Just can't use my production machine as a beta test site and have hours of downtime trying to troubleshoot a netflow issue. At tech supports request I truncated all my netflow data tables to zero size. V3 still would not install it continued to hang a the same place.
So, I just removed netflow V3, the removal of V3 didn't effect my exsiting NPM or other data or settings.
Going to leave netflow off my server till v3.1 or something further down the line is released. Till then I will rely on freeware scrutinizer to give me my netflow info..
Sometimes you get it right, other times you don't. For my install this is one of those "don't" times.
Good luck to all of those in their V3 battles. Hope you come out victorious over the evil netflow bugs! 