I've had rainy days since posting this, and haven't had a chance to see if anything has changed.

Has anyone else had this problem?  Has anyone figured out how to fix this problem?

Short of re-installing Kstars completely from scratch and having to go through all the personal settings I had again and hoping that resolves the problem, I have yet to figure out how to get it to stop doing this.

The only thing that changed from one night to the next was the bleeding-edge update.  The scope sat in the same place, powered up the entire time, and one night it worked, the next night it didn't. 

If it doesn't work the next time I try it, it is effectively a useless scope system.