I'd rather think there was something left in your kstars/build folder. I always build out-of-tree in a new created folder to make sure cmake doesn't use old cached info...

As for slewing: Yes, it solves (fast!), then slews (to the correct target ), but then runs the simulator CCD, and tries to verify - which fails. Then the 'Load & Slew' button stays disabled. So I first have to click some other location in the star map, 'goto' there, and only then I can try another image for solving....
Gets tiring after a while

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