diff --git a/rhino/aliases/cmd/smart_join.py b/rhino/aliases/cmd/smart_join.py
index 67c9ff1..0c7aac3 100644
--- a/rhino/aliases/cmd/smart_join.py
+++ b/rhino/aliases/cmd/smart_join.py
@@ -94,11 +94,11 @@ def _walls_and_curves_from_sel(doc, sel):
     # Pre-Index wand_axis by wall_id fuer schnelles Lookup
     axis_by_id = {}
     for o in doc.Objects:
-        if o.Attributes.GetUserString("dossier_type") == "wand_axis":
+        if o.Attributes.GetUserString("dossier_element_type") == "wand_axis":
             wid = o.Attributes.GetUserString("dossier_element_id") or ""
             if wid: axis_by_id[wid] = o
     for obj in sel:
-        t = obj.Attributes.GetUserString("dossier_type") or ""
+        t = obj.Attributes.GetUserString("dossier_element_type") or ""
         wid = obj.Attributes.GetUserString("dossier_element_id") or ""
         if t == "wand_axis" and wid and wid not in seen_walls:
             axes.append(obj); seen_walls.add(wid)
@@ -243,11 +243,30 @@ def _run():
     # L-Join: beide Endpunkte werden zum Schnittpunkt der verlaengerten Linien
     # gezogen. T zuerst probieren (= spezifischer), dann L als Fallback.
     if len(sel) >= 2:
+        # Diagnostic: was sieht smart_join in der Selection?
+        axes_dbg, generic_dbg = _walls_and_curves_from_sel(doc, sel)
+        type_counts = {}
+        for o in sel:
+            try:
+                t = o.Attributes.GetUserString("dossier_element_type") or "<none>"
+                wid_raw = o.Attributes.GetUserString("dossier_element_id") or ""
+                geom_kind = type(o.Geometry).__name__
+                key = "{}|{}|wid={}".format(t, geom_kind,
+                                             "yes" if wid_raw else "no")
+                type_counts[key] = type_counts.get(key, 0) + 1
+            except Exception: pass
+        print("[SMART-JOIN] sel-detect: {} Wand-Achsen, {} generische Curves "
+              "(sel total: {})".format(len(axes_dbg), len(generic_dbg), len(sel)))
+        for k, n in type_counts.items():
+            print("[SMART-JOIN]   {} × {}".format(n, k))
         try:
             if _t_join_attempt(doc, sel):
                 doc.Views.Redraw()
                 print("[SMART-JOIN] T-Join: Endpunkt auf Achse gesnappt")
                 return
+            else:
+                print("[SMART-JOIN] T-Join: kein passender Kandidat (zu weit "
+                      "weg oder am Endpunkt → L-Join Territory)")
         except Exception as ex:
             print("[SMART-JOIN] T-Join error:", ex)
         try:
@@ -255,6 +274,9 @@ def _run():
                 doc.Views.Redraw()
                 print("[SMART-JOIN] L-Join: 2 Curves zu L verbunden")
                 return
+            else:
+                print("[SMART-JOIN] L-Join: konnte nicht ausfuehren (parallel, "
+                      "schon verbunden, oder Geometrie ungueltig)")
         except Exception as ex:
             print("[SMART-JOIN] L-Join error:", ex)
 
@@ -262,7 +284,7 @@ def _run():
     # — das wuerde mehrere Achsen zu einer Curve zusammenkleben und die Wand-
     # Verknuepfung zerstoeren (Source-Duplikat-Listener kapert die alte ID).
     has_wand_axis = any(
-        obj.Attributes.GetUserString("dossier_type") == "wand_axis"
+        obj.Attributes.GetUserString("dossier_element_type") == "wand_axis"
         for obj in sel)
     if has_wand_axis:
         print("[SMART-JOIN] Wand-Achsen selektiert: T-Join/L-Join hat nicht "