diff --git a/pyaedt/modeler/cad/elements3d.py b/pyaedt/modeler/cad/elements3d.py
index c609c3855f5..10bfc545700 100644
--- a/pyaedt/modeler/cad/elements3d.py
+++ b/pyaedt/modeler/cad/elements3d.py
@@ -1396,12 +1396,15 @@ def __init__(self, node, child_object, first_level=False, get_child_obj_arg=None
         self.children = {}
         self.auto_update = True
         name = None
-        if get_child_obj_arg is None:
-            child_names = [i for i in list(child_object.GetChildNames()) if not i.startswith("CachedBody")]
-        else:
-            child_names = [
-                i for i in list(child_object.GetChildNames(get_child_obj_arg)) if not i.startswith("CachedBody")
-            ]
+        try:
+            if get_child_obj_arg is None:
+                child_names = [i for i in list(child_object.GetChildNames()) if not i.startswith("CachedBody")]
+            else:
+                child_names = [
+                    i for i in list(child_object.GetChildNames(get_child_obj_arg)) if not i.startswith("CachedBody")
+                ]
+        except Exception:  # pragma: no cover
+            child_names = []
         for i in child_names:
             if not name:
                 name = i
diff --git a/pyaedt/rmxprt.py b/pyaedt/rmxprt.py
index 93e7a4d84a9..83dfe31e7b3 100644
--- a/pyaedt/rmxprt.py
+++ b/pyaedt/rmxprt.py
@@ -43,7 +43,7 @@ def __init__(self, app):
 
     @property
     def properties(self):
-        """Object history.
+        """Object parameters.
 
         Returns
         -------
@@ -121,7 +121,7 @@ class Shaft(RMXprtModule):
 class Machine(RMXprtModule):
     """Provides rotor properties."""
 
-    component = ""
+    component = "General"
 
 
 class Circuit(RMXprtModule):