[ozone123]

Lately, I 've been having problems importing books [.mobi/.epub] into Calibre. The problem started after I switched my entire library from my PC to my home server. I'm using BicBucStriim as a web-based program to view/download my collection. It works very well, and I'm pleased with it. However, when trying to import more books in Calibre, I only get error messages such as this and "empty" book results:


calibre, version 2.31.0
ERROR: Errors while adding: Failed to add any books, click "Show details" for more information


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Failed to add the book: Scan 20150710 105852
C:/Users/xxxx/Desktop/Scan_20150710_105852.epub
With error:
Traceback (most recent call last):
File "site-packages\calibre\gui2\add.py", line 366, in add_book
File "site-packages\calibre\db\legacy.py", line 211, in create_book_entry
File "site-packages\calibre\db\cache.py", line 57, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 1500, in create_book_entry
File "site-packages\calibre\db\cache.py", line 1237, in set_metadata
File "site-packages\calibre\db\cache.py", line 1064, in update_path
File "site-packages\calibre\db\backend.py", line 1508, in update_path
File "site-packages\calibre\db\tables.py", line 130, in set_path
File "site-packages\calibre\db\backend.py", line 804, in execute
File "c:\cygwin64\home\kovid\sw\build\apsw-3.8.2-r1\src\cursor.c", line 231, in resetcursor
CantOpenError: CantOpenError: unable to open database file

So I'm at a loss of what to do now that I'm unable to import more books into the library. I've tried uninstalling/re-installing Calibre, but it retains my library history and I don't know if I should be playing around with my library if other people are looking through my server for ebooks to download. I've perused the forums here, but some answers were Linux related. Other than that, I may have to delete my entire library [backups exist] and try re-installing Calibre again?