Revert No-Voice in proportion graph in multi-file analysis

utils.py

@@ -488,10 +488,14 @@ def build_multifile_category_df(validNames, results, summaries, categories, cate
 
     for fn in validNames:
         summary, extras = summaries[fn]["categories"]
+        # If this file was skipped in the first loop (calcCategories failed),
+        # summary will be [] — fill every category column with 0 so all
+        # arrays stay the same length.
+        if not summary:
+            for category in allCategories:
+                df6_dict[category].append(0)
+            continue
         theseCategories = categories + extras
-        # Use the annotation's actual span as denominator, falling back to
-        # results[fn][1]. This avoids >1.0 values when totalSeconds was
-        # truncated to int or is slightly shorter than the last segment end.
         annotation_end = max(
             (s.end for s in results[fn][0].itersegments()),
             default=results[fn][1]