Fillet problem

 From:  Octo
8063.1 
Hello,

I'm an experienced 3d modeler, but new to nurbs and Moi and is currently using the free version to try it out.
Liking it so far but once in a while I run into problems such as the one I'm about to describe..with images.

Basic model and edges to fillet: https://drive.google.com/open?id=0B4W2M6Gk9EM8X3BYVEd6X1RzNlU

Results: https://drive.google.com/open?id=0B4W2M6Gk9EM8SDNiNVdaR09jb0U and https://drive.google.com/open?id=0B4W2M6Gk9EM8ZkdFbUNOT2NrNlU

And when i tried a workaround by insetting and using blend I got this https://drive.google.com/open?id=0B4W2M6Gk9EM8X3JMeGE0UFFONjA

The model seems pretty simple to me...but that chamfered edge seems to cause it?
Anyway some insight would be appriciated.