Print stack trace to stdout on internal error

app/playlists.py

@@ -427,7 +427,10 @@ class PlaylistTab(QTableWidget):
                     plr_item = self._get_row_plr(session, row)
                     if not plr_item:
                         return False
-                    self._set_row_note_text(session, row, plr_item.note)
+                    if note_column == ROW_NOTES:
+                        self._set_row_note_text(session, row, plr_item.note)
+                    else:
+                        self._set_row_header_text(session, row, plr_item.note)
 
             # Connect signal so we know when cell has changed.
             self.cellChanged.connect(self._cell_changed)
@@ -624,6 +627,8 @@ class PlaylistTab(QTableWidget):
                       "MusicMuster unexpected failure",
                       stackprinter.format()
                       )
+            print("play_started:current_row is None")
+            stackprinter.show(add_summary=True, style="darkbg")
             return
 
         # Mark current row as played
@@ -667,6 +672,8 @@ class PlaylistTab(QTableWidget):
                       "MusicMuster unexpected failure",
                       stackprinter.format()
                       )
+            print("populate_display:no playlist")
+            stackprinter.show(add_summary=True, style="darkbg")
             return
 
         for plr in playlist.rows:
@@ -1876,6 +1883,8 @@ class PlaylistTab(QTableWidget):
                       stackprinter.format()
                       )
             return
+            print("playists:_set_row_header_text() called on track row")
+            stackprinter.show(add_summary=True, style="darkbg")
 
         # Set text
         _ = self._set_item_text(row_number, HEADER_NOTES_COLUMN, text)
@@ -1910,6 +1919,8 @@ class PlaylistTab(QTableWidget):
                       "playists:_set_row_note_colour() called on header row",
                       stackprinter.format()
                       )
+            print("playists:_set_row_note_colour() called on header row")
+            stackprinter.show(add_summary=True, style="darkbg")
             return
 
         # Set colour
@@ -1931,6 +1942,8 @@ class PlaylistTab(QTableWidget):
                       "playists:_set_row_note_text() called on header row",
                       stackprinter.format()
                       )
+            print("playists:_set_row_note_text() called on header row")
+            stackprinter.show(add_summary=True, style="darkbg")
             return
 
         # Set text