diff --git a/OpenUtau.Core/Classic/ClassicRenderer.cs b/OpenUtau.Core/Classic/ClassicRenderer.cs
index eaae51d89..e9717f8fc 100644
--- a/OpenUtau.Core/Classic/ClassicRenderer.cs
+++ b/OpenUtau.Core/Classic/ClassicRenderer.cs
@@ -72,7 +72,8 @@ public Task<RenderResult> RenderInternal(RenderPhrase phrase, Progress progress,
                             item.resampler.DoResamplerReturnsFile(item, Log.Logger);
                         }
                         if (!File.Exists(item.outputFile)) {
-                            throw new InvalidDataException($"{item.resampler} failed to resample \"{item.phone.phoneme}\"");
+                            DocManager.Inst.Project.timeAxis.TickPosToBarBeat(item.phrase.position + item.phone.position, out int bar, out int beat, out int tick);
+                            throw new InvalidDataException($"{item.resampler} failed to resample \"{item.phone.phoneme}\" at {bar}:{beat}.{string.Format("{0:000}", tick)}");
                         }
                         if (!(item.resampler is WorldlineResampler)) {
                             VoicebankFiles.Inst.CopyBackMetaFiles(item.inputFile, item.inputTemp);