I am working through an model of an equation driven circular pattern for a spur gear. It is direct copy of a model by Sonu Kumar Singh in 2015 presumably using SW2015. His model has a circular solid with cuts for the gear teeth like one would machine a gear from a blank. In the model the feature for the cut has a fillet at the root and when attempting to pattern the cut and fillet it fails. This apparently does not fail in an earlier version of SW as shown in Equation Driven SMART Spur Gear in Solidworks (Metric Unit) - YouTube. My model is attached. Any suggestions?