No available formats - epubs disappeared?
I have been using Calibre for 4 years, some books I already have from the beginning, and never had any problems.
Today I added new books (epub), downloaded metadata and transferred them from my "work in progress" database to my actual "finished" library.
For all these books, and some others which have been in the "finished library" for years I get the message "no available formats" when trying to open the book.
When opening the path, the folder appears empty, only a metadata.opf file.
This is the case for all the books I copied from one library to the other today. But it also occurs with a lot of books that I haven't touched in years.
I have checked library maintenance /check library: no errors found
Also, never got any error messages to indicate an instable database.
Can someone please help me what's going on??
I run calibre from the local harddrive, Win7 x64, calibre 2.53 (64bit)
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