Not much help really because I can't explain why - but if I select bar 12 and clear all midi data the problem goes away.

When you say "C drive" do you mean you're looking in "C:\Program Files (x86)"? Finale 25 is a 64bit program, so (assuming Win10 uses the same structure as Win7) should be installed in "C:\Program...

Turning off automatic update of MM rests did the trick (not sure how I missed that one - though I was thinking it was a barline issue rather than a MM rest one). IMO Finale shouldn't update/change...

If I create a piece in Finale (2014.5) and manually reposition a barline, Finale moves it back to where *it* thinks it should be when printing (and leaves it there after the print has finished -...

Or you could hide the 'extra' accidental via SHIFT-8 in Speedy Entry (it doesn't matter which layer as Finale will adjust the positioning regardless) - I've been on 2014 for quite a while now, but...