MuseScore 3 renders mscz files unreadable
I store all my MuseScore work as MuseScore compressed files (mscz) for future reference and re-working (I have hundreds of these on file). For many reasons, I haven't been able to work regularly with my music for quite a while. I've really looked forward to returning to it.
I recently updated to MuseScore 3, and for the first time needed to go back into a previous mscz file. I was shocked to find that all such files now return with a message like this:
"Cannot read file F:/MScore ORIG FILES/.Black Velvet Band 0 - E - trad Irish.mscz,: unknown type"
I noticed that all these mscz file names now seem to have a comma after the mscz, which they did not have previously. I tried to rename one of these files without the comma, to see if I could make it readable. It did come up, but with this further message:
"To best take advantage of automatic placement in MuseScore 3 when importing '.Black Velvet Band 0 - E - trad Irish High Kings' from MuseScore 1.3, it is recommended to reset the positions of all elements.
Reset the positions of all elements?"
This is the first time in years of using MuseScore that an update has messed with my files. Am I really going to have to go back in, and re-name each file individually, then reset the elements (also individually)?
I've never had to "import" my own files into a MuseScore update before MuseScore 3.
Any help would be greatly appreciated.
[I'm running Windows 10 on an HP Pavillion desktop; I store all my music files externally on USB drives and have never had this problem before.]
Has anyone else encountered this? Does anyone else have a simpler workaround?