Fillet trouble on converging edges

 From:  Branden (BRANDROID)
6479.1 
Seems to be a common theme with me and MOI, but I can't get a fillet to calculate on the edges shown. I've tried tiny values and all the different types. I'm guessing MOI doesn't like the area where the two edges converge on the sides of the solid. Any obvious fixes that I'm missing here?