Hi MikeG, it seems like your show file has somehow become corrupted. It shouldn’t be possible for an update to have caused this, let alone for an update to corrupt your previous show files. Installing a new version of Finale 3D only modifies files in the Finale 3D installation directory; it doesn’t touch show files in any way or files stored in other folders on your computer.
When a single show file is corrupted, the problem is typically that something interfered with the saving process the last time you saved the show. I’ve never encountered a situation where all show files saved on a computer are corrupted. As a theory, I wonder if this could be caused by an antivirus or antimalware application mistakenly seeing your show files as malicious.
As a first step, try recovering your show(s) from the backup copy that Finale 3D keeps, which you can access from within Finale 3D by going to File > Admin > Open backup files directory.
