diff --git a/dist/screener_gui.py b/dist/screener_gui.py
index 916043e..96ed35c 100644
--- a/dist/screener_gui.py
+++ b/dist/screener_gui.py
@@ -1976,12 +1976,25 @@ class ScreenerPage(QWidget):
         self._status_lbl.setText("  Stopped.")
 
     def _worker(self, settings, run_id, signals):
+        import os as _os, traceback as _tb
+        _log_path = _os.path.join(_os.environ.get("TEMP", _os.path.expanduser("~")), "screener_run.log")
+        def _log(msg):
+            try:
+                with open(_log_path, "a", encoding="utf-8") as _f:
+                    from datetime import datetime as _dt
+                    _f.write(f"[{_dt.now().strftime('%H:%M:%S')}] {msg}\n")
+            except Exception:
+                pass
+
+        _log("=== Run started ===")
         redirector = _StdoutRedirector(signals)
         old_stdout = sys.stdout
         sys.stdout = redirector
         try:
             signals.status.emit("Fetching ticker lists…")
+            _log("collect_tickers start")
             tickers = collect_tickers(index=settings["index"])
+            _log(f"collect_tickers done: {len(tickers)} tickers")
             if not tickers:
                 signals.error.emit("Could not retrieve any ticker lists.")
                 return
@@ -1990,7 +2003,9 @@ class ScreenerPage(QWidget):
 
             sf = settings.get("screen_filters", {})
             signals.status.emit(f"Screening {len(tickers)} stocks…")
+            _log("fetch_all start")
             df_raw = fetch_all(tickers, max_workers=settings["workers"], screen_filters=sf)
+            _log(f"fetch_all done: {len(df_raw)} rows, empty={df_raw.empty}")
 
             if self._stop_event.is_set():
                 signals.stopped.emit(); return
@@ -2000,13 +2015,18 @@ class ScreenerPage(QWidget):
 
             signals.status.emit("Loading sector stats…")
             sector_stats = _load_sector_stats()
+            _log(f"sector_stats: {len(sector_stats)} sectors")
             signals.status.emit(f"Computing scores for {len(df_raw)} stocks…")
             df_scored = score_stocks(df_raw, weights=settings.get("weights"), sector_stats=sector_stats)
+            _log(f"score_stocks done: {len(df_scored)} rows")
             signals.done.emit(df_raw, df_scored, sector_stats, len(df_scored))
+            _log("done signal emitted")
         except Exception as exc:
+            _log(f"EXCEPTION: {_tb.format_exc()}")
             signals.error.emit(str(exc))
         finally:
             sys.stdout = old_stdout
+            _log("=== Run finished ===")
 
     @Slot(int, int, int, int, float)
     def _on_progress(self, done, total, ok, skip, eta):
diff --git a/updater.py b/updater.py
index de74f5c..a340733 100644
--- a/updater.py
+++ b/updater.py
@@ -19,7 +19,7 @@ import requests
 # ---------------------------------------------------------------------------
 # Current app version — kept in sync by push_update.py before each build.
 # ---------------------------------------------------------------------------
-APP_VERSION = "1.4.4"
+APP_VERSION = "1.4.5"
 
 
 def _exe_dir() -> str: