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Changing conditions in SwitcherPro

Other Parts Discussed in Thread: TPS61175

I am using SwitcherPro v3.8.  I am looking at the TPS61175 EVM design and would like to look at some "What-If" scenarios.  BUT, every time I change anything I get an error when I hit Calculate.  (It states "Can not perform calculation.  Power stage conditions are invalid.  Use the 'Power Stage' tab to correct values).  

I'd like to change the switching frequency to ~1.2MHz to see how it affects the circuit.  Any suggestions?  I need to shrink down the inductor and cap size to fit in my package.  Thanks!