I also find it hard to believe that Calibre deleted the entire folder Structure
An Uninstall leaves the:
1)Library folder(s) intact (you must manually delete them, even if you use the 'Delete (another) Library from the Library Menu (that just removes the reference).
2)Leaves the configuration (plugins) behind
An Update that should find the configuration does not even attempt to create a new library
As mentioned: Quite a while back interlocks were created that prevented creation of a Library in a folder that was occupied and did not have a metadata.db (Calibre will use that
valid Library folder, even in the absence of a missing configuration)
The only (and it is non-calibre) thing. Something hoarked the FULL user rights to the folder/contents. The odd thing is metadata.db should still be there BECAUSE of a right to delete problem
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