diff --git a/dist/screener_gui.py b/dist/screener_gui.py
index 96ed35c..061f264 100644
--- a/dist/screener_gui.py
+++ b/dist/screener_gui.py
@@ -312,7 +312,7 @@ _PHASE1_RE   = re.compile(r"(\d+)/(\d+)\s+scanned\s+valid=(\d+)")
 class _WorkerSignals(QObject):
     progress = Signal(int, int, int, int, float)
     status   = Signal(str)
-    done     = Signal(object, object, object, int)
+    done     = Signal(int)
     error    = Signal(str)
     stopped  = Signal()
 
@@ -1798,6 +1798,9 @@ class ScreenerPage(QWidget):
         self._df = None
         self._df_raw = None
         self._sector_stats = {}
+        self._pending_df_raw       = None
+        self._pending_df_scored    = None
+        self._pending_sector_stats = {}
         self._stop_event = threading.Event()
         self._run_id = 0
         self._rescoring = False
@@ -2019,7 +2022,11 @@ class ScreenerPage(QWidget):
             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))
+            # Store results in instance vars — avoids passing large objects through signal
+            self._pending_df_raw       = df_raw
+            self._pending_df_scored    = df_scored
+            self._pending_sector_stats = sector_stats
+            signals.done.emit(len(df_scored))
             _log("done signal emitted")
         except Exception as exc:
             _log(f"EXCEPTION: {_tb.format_exc()}")
@@ -2038,8 +2045,16 @@ class ScreenerPage(QWidget):
     def _on_status(self, text):
         self._status_lbl.setText("  " + text)
 
-    @Slot(object, object, object, int)
-    def _on_done(self, df_raw, df_scored, sector_stats, total):
+    @Slot(int)
+    def _on_done(self, total):
+        df_raw       = getattr(self, "_pending_df_raw",       None)
+        df_scored    = getattr(self, "_pending_df_scored",    None)
+        sector_stats = getattr(self, "_pending_sector_stats", {})
+        if df_scored is None:
+            self._status_lbl.setText("  Error: result data missing.")
+            self._run_btn.setEnabled(True)
+            self._stop_btn.setEnabled(False)
+            return
         self._df_raw       = df_raw
         self._df           = df_scored
         self._sector_stats = sector_stats
diff --git a/updater.py b/updater.py
index 727fd34..65b29f6 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 = "1.4.6"
+APP_VERSION = "1.4.7"
 
 
 def _exe_dir() -> str: