Hi Guys I finally managed to get it working.I installed the last 2B release on my secondary install with only the Xmas gift installed and it worked!
I am starting to suspect that the problem I had was because I may have installed the previous version of 2B
or alternately what I was doing before was extracting the mod into a separate folder and then from that folder installing them into my game. This time around I extracted the mod staright into my game folder and from there installed it. Whatever the reason it´s working!
Big relief!But I still believe it makes sense to make integral copies of your running game either on an external hard disk or a USB stick or into another drive on your hard disk.Just to experiment and when there are future mods/releases with bugs you always have a fallback and you avoid screwing your main game and can safely install the modfs when they re working well on your back up install
Cheers
Thanks ZW for your advice