From 129ca06b2b8f110da76620120b2f485a04fa7757 Mon Sep 17 00:00:00 2001 From: Kovid Goyal Date: Sun, 1 Nov 2020 15:25:31 +0530 Subject: [PATCH] Fix #1902416 [Private bug](https://bugs.launchpad.net/calibre/+bug/1902416) --- src/calibre/gui2/library/alternate_views.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/calibre/gui2/library/alternate_views.py b/src/calibre/gui2/library/alternate_views.py index 860c9e512f..9fbc7dd107 100644 --- a/src/calibre/gui2/library/alternate_views.py +++ b/src/calibre/gui2/library/alternate_views.py @@ -229,7 +229,7 @@ def dragEnterEvent(self, event): def dropEvent(self, event): md = event.mimeData() if dnd_merge_ok(md): - ids = set(map(int, bytes(md.data('application/calibre+from_library')).decode('utf-8').split(' '))) + ids = set(map(int, filter(None, bytes(md.data('application/calibre+from_library')).decode('utf-8').split(' ')))) row = self.indexAt(event.pos()).row() if row > -1 and ids: book_id = self.model().id(row)