[Gibook]

I have many books, so now kobo utilities give me this:

calibre, version 3.7.0
ERRORE: Eccezione non gestita: <b>IndexError</b>:list index out of range

calibre 3.7 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.16278-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.16278')
Python 2.7.12+
Windows: ('10', '10.0.16278', 'SP0', u'Multiprocessor Free')
Interface language: it
Successfully initialized third party plugins: Author Book Count (2, 1, 5) && Import List (1, 2, 0) && BBC GoodFood Recipe Reader (1, 1, 0) && Drop Search Results (1, 0, 8) && LubimyCzytac (2, 0, 25) && User Category (1, 5, 3) && MultiColumnSearch (1, 0, 71) && EpubMerge (2, 1, 1) && Antikvarium_hu (1, 0, 1) && Fantastic Fiction Adults (1, 0, 4) && Save Virtual Libraries To Column (2, 0, 0) && Diaps Editing Toolbag (0, 3, 5) && DOC Input (1, 0, 1) && ADLIBRIS_SE (0, 2, 3) && Chinese Text Conversion (2, 2, 4) && biblioNETka.pl (1, 0, 1) && Public_gr (1, 0, 0) && NormComment (0, 0, 2) && Kindle Collections (1, 7, 17) && Library Codes (1, 0, 30) && Medion OYO Device Interface (1, 2, 8) && QuarantineAndScrub (3, 6, 103) && Moly_hu (1, 0, 4) && Author Book Count Hierarchy (1, 1, 8) && Hyphenate This! (0, 0, 8) && KindleUnpack - The Plugin (0, 81, 5) && Prettify Cover 0.9.12 && food network Recipe Reader (1, 0, 2) && BOL_DE (0, 7, 5) && ScrambleEbook (0, 0, 5) && KoboTouchExtended (2, 8, 2) && GetFileName (0, 0, 12) && Save To Format (0, 0, 6) && INMONDADORI (0, 2, 1) && Unplugged (1, 0, 0) && Modify ePub (1, 3, 13) && Similar Stories (1, 0, 58) && Consolidate All Library Metadata (2, 0, 32) && Annotations (1, 6, 0) && Reading List (1, 6, 6) && SmartEject (2, 0, 7) && Clean Metadata (0, 0, 6) && EpubCheck (0, 1, 2) && KePub Output (2, 7, 1) && FictionDB (1, 0, 10) && Send by RSYNC (1, 0, 2) && Beam Ebooks (1, 0, 0) && Medical Reader (1, 0, 1) && Ex Libris (1, 0, 19) && KFX Output (1, 10, 0) && Manage Series (1, 2, 8) && Amazon.com Multiple Countries (1, 0, 0) && Recipe Reader (1, 0, 1) && QRCode Tracker Filidel (0, 7, 0) && BigOven Recipe Reader (1, 0, 1) && Goodreads Sync (1, 10, 1) && Save Composite Custom Columns (1, 1, 0) && Skoob (1, 2, 1) && KePub Input (2, 7, 3) && Clipboard Search (1, 3, 1) && Kobo Utilities (2, 6, 0) && Job Spy (1, 0, 76) && Kobo Books (1, 2, 1) && APNX Generator (1, 1, 0) && Databazeknih (1, 4, 0) && Generate Cover (1, 5, 21) && Quality Check (1, 9, 11) && Save Virtual Libraries To Column GUI (2, 2, 1) && djvumaker (1, 0, 2) && Zotero Metadata Importer (1, 0, 49) && Extract ISBN (1, 4, 4) && Biblionet_gr (1, 1, 0) && Walk Search History (1, 3, 1) && Prince PDF (1, 4, 2) && Search The Internet (1, 7, 6) && Martinus.sk (0, 1, 1) && KePub Metadata Reader (2, 7, 1) && Media File Importer (1, 0, 20) && KePub Metadata Writer (2, 7, 1) && FanFicFare (2, 17, 1) && English Noun Frequency (1, 0, 7) && X-Ray Creator (3, 1, 2) && Open With (1, 5, 10) && Manage Sony x50 Reader Book List (1, 2, 11) && Goodreads (1, 1, 12) && all recipes Recipe Reader (1, 0, 1) && Count Pages (1, 8, 0) && Webscription (1, 1, 0) && Anobii Fetcher (1, 1, 0) && ADLIBRIS_NO (0, 0, 9) && Quick Preferences (1, 4, 1) && catawiki (0, 0, 2) && Overdrive Link (2, 15, 0) && View Manager (1, 4, 3) && EpubSplit (2, 2, 1) && Audit Log (1, 0, 8) && Fantastic Fiction (1, 2, 0) && BOL_NL (3, 8, 16) && Barnes & Noble (1, 2, 14) && Libri_hu (1, 0, 6) && Copy Cover To Device (2, 0, 0) && MondoUrania (0, 2, 1) && OPML Importer (1, 0, 1) && Embed Comic Metadata (1, 3, 7) && Find Duplicates (1, 6, 3) && Read MP3 AudioBook metadata (1, 0, 79) && ANOBII (0, 4, 3) && Hymn Reader (1, 0, 1) && Wiki Reader (2, 1, 0) && Resize Cover (1, 0, 2) && Favourites Menu (1, 0, 4) && Overdrive Link* (2, 15, 0)
Traceback (most recent call last):
File "site-packages\calibre\gui2\__init__.py", line 449, in dispatch
File "calibre_plugins.koboutilities.action", line 2166, in _store_completed
IndexError: list index out of range