I've tried exiting calibre and restarting it as well.ĮRROR: Cannot open file or folder as it is in use: Could not change on-disk location of this book's files.

I'll also note that windows explorer is not open in the folder in question. It also shows up when I try to open books. When I load the same book into Calibre 5.44, using the Obok plugin from DeDRM tools 7.2, the book is successfully installed with DRM removed.When trying to update metadata I keep getting the below error which I have never seen before.

Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (1, 49, 0) & DeDRM (7, 2, 1) & Package KFX (from KFX Input) (1, 49, 0) & KFX metadata reader (from KFX Input) (1, 49, 0) & KFX Input (1, 49, 0) & Set KFX metadata (from KFX Output) (1, 63, 0) & KFX Output (1, 63, 0) & Kobo Utilities (2, 16, 4) & Obok DeDRM (7, 2, 1)įile 'calibre_plugins.obok_dedrm.action', line 135, in launchObokįile 'calibre_plugins.obok_dedrm.dialogs', line 102, in initįile 'calibre_plugins.obok_dedrm.dialogs', line 154, in populate_tableįile 'calibre_plugins.obok_dedrm.dialogs', line 179, in populate_table_rowįile 'calibre_plugins.obok_dedrm.dialogs', line 439, in initįile 'calibre_plugins.obok_dedrm.dialogs', line 412, in initĪttributeError: type object 'QTableWidgetItem' has no attribute 'UserType'

When I attempt to add a book purchased from Kobo and loaded from the Kobo desktop app, I get the following error message:ĮRROR: Unhandled exception: AttributeError:type object 'QTableWidgetItem' has no attribute 'UserType' I recently installed Calibre 6.1 and added the Obok plugin from DeDRM tools 7.2.

Calibre 6.25.0 instal the new