To clarify, this is the expanded message that pops up when I try:
Traceback (most recent call last): File “dop_rbdobject”, line 3, in <module> File “Z
Houdini/houdini/python2.7libs\toolutils.py”, line 1148, in new_func return function(args, *kwargs) File “Z
Houdini/houdini/python2.7libs\doptoolutils.py”, line 1233, in genericTool exact_node_type = exact_node_type) File “Z
Houdini/houdini/python2.7libs\toolutils.py”, line 1148, in new_func return function(args, *kwargs) File “Z
Houdini/houdini/python2.7libs\toolutils.py”, line 1264, in genericTool exact_node_type) File “Z
Houdini/houdini/python2.7libs\toolutils.py”, line 1129, in createNodeInContainer exact_type_name = exact_node_type) File “Z
Houdini/houdini/python2.7libs\houpythonportion.py”, line 541, in decorator return func(args, *kwargs) File “Z
Houdini/houdini/python2.7libs\hou.py”, line 5656, in createNode return _hou.Node_createNode(args, *kwargs) OperationFailed: The attempted operation failed. Invalid node type name
