expand group node action fix

Author: jchanvfx

NodeGraphQt/base/graph.py

@@ -1839,7 +1839,8 @@ def expand_group_node(self, node):
         Returns:
             SubGraph: sub node graph used to manage the group node session.
         """
-        assert isinstance(node, GroupNode), 'node must be a GroupNode instance.'
+        if not isinstance(node, GroupNode):
+            return
         if self._widget is None:
             raise RuntimeError('NodeGraph.widget not initialized!')
 

NodeGraphQt/base/graph_actions.py

@@ -69,7 +69,7 @@ def build_context_menu(graph):
         'Auto Layout Down Stream', _layout_graph_down, 'Ctrl+L')
     node_menu.add_separator()
     node_menu.add_command(
-        'Expand Group', _expand_group_node,
+        'Expand Group Node', _expand_group_node,
         QtGui.QKeySequence(QtCore.Qt.ALT + QtCore.Qt.Key_Return))
 
     # "Pipe" menu.