I looked at the whole thing a bit closer. Under Gimp 2.6 UFraw is installed in the Gimp 2.0 folder. That is the Programs (x86) folder. Now with Gimp 2.8, the Gimp install folder has changed to the Programs folder, ie, not the x86 folder. So Ufraw still install in Gimp 2.0 and it is not in the same folder anymore. The one is a 64 bit (Gimp) and the other 32bit (UFraw). Therefore the two can not communicate anymore and we will have to wait for the programmers to come up with an answer.
Your way is one way to do it in the mean time. The other obvious to go back to Gimp 2.6 which I did. I am tempted to go your way as well. However, as a beginner, I think it is easier to go the 2.6 route, as the learning curve is easier with the available "Meet the Gimp" videos. In the vids, the old keyboard short cuts is used, for instance. The ctrl, shift E shortcut has changed in 2.8 to ctrl, shift J. This can be very frustrating if you do something and it does not work. There is bound to be other changes as well.
So for now, I will continue learning in 2.6.