I've been running BIAB on this Lenovo laptop since Dec. with very little problem. Not unusual that a W10 update lurks menacingly on Friday mornings. Though I view these with trepidation, I've become complacent as there have been no problem until today's update ended with a "could not install update" message.

Nothing suspicious after that. System booted and things seemed to work fine until I tried BIAB and got error messages about not being able to locate Real tracks/drums on the BIAB D drive. I re-pointed BIAB's Prefs to D and all seems well.

So what the heck could have caused that?