> One of the surface/surface fillets would not generate,
> I'm not sure what was wrong there I'll see if I can
> take a quick look.

This turned out to be a problem with clicking too close to where the 2 surfaces touch when doing surface/surface filleting.

The pick points have an effect in surface/surface filleting - they are used to choose which way to offset the surfaces. For example if you have 2 planes that cross each in an X type shape then there are 4 possible fillets between them and the pick points determine which one of those to generate.

But if the surfaces are curved and you pick right near their common edge, it can get confused about the directions. But if you pick a little distance away from the common edge for surface/surface filleting, then it is generated ok in this case on all 4 areas.

Maybe in the future I can fix this up so that surfaces that share a common edge will take that into account and do a better job of this. But basically if you pick just a little bit to the outside of where the actual fillet will be going it will work now.

- Michael