Thanks for your fast answer!
My database is located on a hard drive folder, synchronized with OneDrive. The error also occurs, if the OneDrive process is not running or if I move the whole folder to USB and open Calibre Portable on another computer.
The debug output is as follows:
Code:
calibre Fehlerdiagnoseprotokoll
calibre 4.16 Portable embedded-python: True is64bit: False
Windows-10-10.0.19041-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.19041')
Python 2.7.16+
Windows: ('10', '10.0.19041', 'SP0', u'Multiprocessor Free')
Interface language: de
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 31, 0) && Package KFX (from KFX Input) (1, 31, 0) && MultiColumnSearch (1, 0, 81) && Set KFX metadata (from KFX Output) (1, 41, 1) && KFX Output (1, 41, 1) && Kindle hi-res covers (0, 4, 0) && KindleUnpack - The Plugin (0, 82, 1) && KFX metadata reader (from KFX Input) (1, 31, 0) && KFX Input (1, 31, 0) && Modify ePub (1, 4, 1)
calibre 4.16 Portable embedded-python: True is64bit: False
Windows-10-10.0.19041-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.19041')
Python 2.7.16+
Windows: ('10', '10.0.19041', 'SP0', u'Multiprocessor Free')
Interface language: de
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 31, 0) && Package KFX (from KFX Input) (1, 31, 0) && MultiColumnSearch (1, 0, 81) && Set KFX metadata (from KFX Output) (1, 41, 1) && KFX Output (1, 41, 1) && Kindle hi-res covers (0, 4, 0) && KindleUnpack - The Plugin (0, 82, 1) && KFX metadata reader (from KFX Input) (1, 31, 0) && KFX Input (1, 31, 0) && Modify ePub (1, 4, 1)
Turning off automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 144.0 x 144.0
physicalDpi: 46.4457142857 x 46.4949152542
Using calibre Qt style: False
[0.00] Starting up...
[0.00] Showing splash screen...
[0.49] splash screen shown
[0.49] Initializing db...
[0.53] db initialized
[0.53] Constructing main UI...
[0] un-optimized number of undesirable characters accumulated: 757
[1] optimized number of undesirable characters accumulated: 597
MCS has finished initialization...
[2.62] main UI initialized...
[2.62] Hiding splash screen
[19.20] splash screen hidden
[19.22] Started up in 19.22 seconds with 722 books
mcs_build_index: D:\OneDrive\Buecher\Calibre Library
starting vacuum
calibre 4.16 Portable embedded-python: True is64bit: False
Windows-10-10.0.19041-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.19041')
Python 2.7.16+
Windows: ('10', '10.0.19041', 'SP0', u'Multiprocessor Free')
Interface language: de
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 31, 0) && Package KFX (from KFX Input) (1, 31, 0) && MultiColumnSearch (1, 0, 81) && Set KFX metadata (from KFX Output) (1, 41, 1) && KFX Output (1, 41, 1) && Kindle hi-res covers (0, 4, 0) && KindleUnpack - The Plugin (0, 82, 1) && KFX metadata reader (from KFX Input) (1, 31, 0) && KFX Input (1, 31, 0) && Modify ePub (1, 4, 1)
Traceback (most recent call last):
File "site-packages\calibre\gui2\__init__.py", line 484, in dispatch
File "calibre_plugins.multi_column_search.ui", line 6384, in mcs_finish_with_refresh
TypeError: force_refresh_of_cache() takes exactly 2 arguments (1 given)
Job: 0 MultiColumnSearch: Build Index finished
Starting job: MultiColumnSearch: Build Index
D:/OneDrive/Buecher/Calibre Library/metadata.db
Thu May 21 18:42:25 2020
Python: Windows CPython 2.7.16+
SQLite Version: 3031001 [APSW]
PRAGMA main.busy_timeout = 15000;
Beginning 'Index Words by Book'
═════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════
Indexing Action chosen: Index All Unindexed Books [TXT Only]
Number of books available to be indexed if needed and possible: 722
Number of unindexed books that need to be indexed if possible: 5
Word lengths in this min/max range will be indexed: 3 to 50
Custom Column #mcs_was_indexed has been synchronized with the word-book index for non-MCS (i.e., user) index deletions or insertions, if any.
Total number of books indexed: 0
Total number of words indexed: 0
Deleted Books or Invalid Books added via a CSV file, if any, have been removed from the Index.
SQLError: unknown database _mcs_word_book_index
You should now defragment/vacuum this library's metadata.db by invoking Calibre menu path: Library > Library Maintenance > Check Library.
MCS Word by Book Indexing is Complete.