diff --git a/src/calibre/gui2/tag_browser/model.py b/src/calibre/gui2/tag_browser/model.py
index 32cd2ca523..f094047c84 100644
--- a/src/calibre/gui2/tag_browser/model.py
+++ b/src/calibre/gui2/tag_browser/model.py
@@ -848,6 +848,8 @@ class TagsModel(QAbstractItemModel):  # {{{
                         icon_map=self.category_icon_map,
                         ids=self.db.search('', return_matches=True, sort_results=False))
             except:
+                import traceback
+                traceback.print_exc()
                 data = self.db.get_categories(sort=sort, icon_map=self.category_icon_map)
                 self.restriction_error.emit()
         else: