The simpler media website CMS
I do not really use the database tool "Refresh Metadata"
Because I loose all my dynamic album descriptions.
And something strange that is not a problem : database file size after refreshment is larger than database file size before refreshment.
At least on my local computer using xampp under Linux.
I do not want to test on my online website.
If you have no such problem, this would mean it's probably an xampp config problem.
I run it almost "out of the box" except the htdocs folder location.