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WEBENCH® Tools/TLV3494: TINA Issue

Part Number: TLV3494

Tool/software: WEBENCH® Design Tools

I am used to using pSpice, and have installed the TI TINA.  I have built a simple circuit (attached) which is simply a zero crossing detector.  When I try to use tools such as the Oscillocope, I get errors that make no sense to me:

Warning: Pin 0 of component is floating (this node will be grounded).

Then the Oscillocope simply says "Collecting Data" and never displays anything.

Can someone give me an idea what I am missing or point me to some documentation that might help?  I found the Help docs in the application not helpful.

Thanks much.

Zero Crossing Detector.TSC