Thanks for your comments.
Based on your experience, it may be that Ekos is waiting for the filter wheel to be flagged to return to its origin.
I immediately opened the lid of the CFW8, shifted the wheel slightly by hand, put the lid back on and connected it to Ekos. When I powered on the wheel, the wheel did indeed spin and return to its origin, but the response on Ekos's part was the same as before.

I need to worry about this some more.

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