Thanks Rob, your comment about loading GSC from the Wizard was a good 'clue'. I had looked and thought you meant the Ekos Profile Wizard for the GSC. It has been over a year since installing Kstars 'planetarium' and setting it up, so I had forgotten about the Start Up Wizard there. I downloaded the GSC as well as other catalogs in the wizard to Tycho 2. I tried the mount- Simulator and 'slewed' to M66 (now in south) and plate solving, put up a simulated image (of 10sec) exp) of star field and solved it quickly -already centered. So the Simulator/plate solver now works and I presume with the "internal solver" that is the Stellasolver, is that correct? It will likely be a few days before I can run this on the actual night sky. But I presume/hope all now works.

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