diff --git a/src/log_registry.py b/src/log_registry.py
index 2bf5344b..5ee346fe 100644
--- a/src/log_registry.py
+++ b/src/log_registry.py
@@ -244,10 +244,12 @@ class LogRegistry:
          for kw in keywords_to_check:
           if kw in line and kw not in found_keywords:
            found_keywords.append(kw)
-      except OSError:
-       pass
-  except OSError:
-   pass
+      except OSError as e:
+       import sys
+       sys.stderr.write(f"[LogRegistry] read comms.log entry failed: {e}\n")
+  except OSError as e:
+   import sys
+   sys.stderr.write(f"[LogRegistry] scan session_path failed: {e}\n")
   size_kb     = total_size_bytes / 1024
   whitelisted = False
   reason      = ""
diff --git a/src/models.py b/src/models.py
index 06c4998f..e4b896a7 100644
--- a/src/models.py
+++ b/src/models.py
@@ -505,8 +505,9 @@ class TrackState:
     if isinstance(ts, str):
      try:
       new_item["ts"] = datetime.datetime.fromisoformat(ts)
-     except ValueError:
-      pass
+     except ValueError as e:
+      import sys
+      sys.stderr.write(f"[models] fromisoformat failed for ts={ts!r}: {e}\n")
     parsed_discussion.append(new_item)
    else:
     parsed_discussion.append(item)
diff --git a/src/multi_agent_conductor.py b/src/multi_agent_conductor.py
index 9d0c3a24..05f93425 100644
--- a/src/multi_agent_conductor.py
+++ b/src/multi_agent_conductor.py
@@ -314,8 +314,9 @@ class ConductorEngine:
           persona = personas[ticket.persona_id]
           if persona.preferred_models:
            models_list = persona.preferred_models
-        except (OSError, KeyError, AttributeError, TypeError):
-         pass # Fall back to default list
+        except (OSError, KeyError, AttributeError, TypeError) as e:
+         import sys
+         sys.stderr.write(f"[ConductorEngine] persona load fallback (ticket={ticket.id}): {e}\n")
        model_idx = min(ticket.retry_count, len(models_list) - 1)
        model_name = models_list[model_idx]
 
diff --git a/src/theme_2.py b/src/theme_2.py
index fa05dd3b..ac398ed2 100644
--- a/src/theme_2.py
+++ b/src/theme_2.py
@@ -279,8 +279,9 @@ def apply(palette_name: str) -> None:
  try:
   import src.markdown_helper
   src.markdown_helper.get_renderer().clear_cache()
- except (ImportError, AttributeError):
-  pass
+ except (ImportError, AttributeError) as e:
+  import sys
+  sys.stderr.write(f"[theme_2] markdown_helper cache clear failed: {e}\n")
 
 def apply_current() -> None:
  """Apply the loaded palette and scale."""