Dana Wheaton commented,
I'm such a dummy, I never tried opening the v25 file by double-clicking on it. It opened in v26, I saved it, & voila, I'm back in business. It was trying your suggestion that led me down this pat...
Dana Wheaton created a post,
Mac OS 10.13 "While Attempting To Access "container.xml" The File Manager Reported An Error ID = -2"