Reviewing this further, I note the steps you identified:
Quote:
I click on "Soloist Button" at top.
Click on "Generate & play a solo".
Click on "Best Real Tracks".


I think the 2nd and 3rd items are possibly reversed?

For me,
1: click the Soloist button
2: Click Add Best RealTracks
3: Click an item from the list
4: Click on Generate and Play Solo

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