Feature fails to cut body

All,

see attached...

Fillet5 is causing Cut-Extrude15 to fail and I have no idea why...  I have deleted and rebuilt, tried different radii sizes, etc... For some reason, I can't add any features after a fillet on those edges.  I need to split this to create two parts from it.  Even in the part derived from the split, I can't add any cuts.

Is this a glitch or am I missing something obvious?  Can anyone hlep?

I'm on SW 2014

thanks

Robert

SolidworksParts And Features