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  1. Good evening, New to python and wanted to get to grips with rigging in Houdini. Been working though the 3DBuzz Technical rigging series and been tripping up over all manner of stuff. On the stretchy spline section of the tuts there is a section that errors out and I am not sure why. The code is stretchRatioParm = hou.FloatParmTemplate("stretchRatio", "Stretch Ratio", 1) startBone.addSpareParmTuple(stretchRatioParm, (“Stretchy IK”, )) Error message reads Traceback (most recent call last): File “stretchyIK”, line 85, in <module> File “stretchyIK”, line 14, in techrig_stretchyIK_Tool File “stretchyIK”, line 54, in techrig_stretchyIK File “CPROGRA~1/SIDEEF~1/HOUDIN~1.671/houdini/python2.7libs\houpythonportion.py”, line 44, in addSpareParmTuple _addParmTuple(self, parm_template, in_folder, create_missing_folders) File “CPROGRA~1/SIDEEF~1/HOUDIN~1.671/houdini/python2.7libs\houpythonportion.py”, line 71, in _addParmTuple parm_template_group, in_folder, create_missing_folders) File “CPROGRA~1/SIDEEF~1/HOUDIN~1.671/houdini/python2.7libs\houpythonportion.py”, line 93, in _ensureFolderExists “Invalid containing folder name(s)”) OperationFailed: The attempted operation failed. Invalid containing folder name(s) Would love if somebody could explain this? I know the tutorials were made in Houdini 9 have there been changes that would make this not work now? Many thanks, Duncan
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