If I try passing the optional arguments I get the following error in MATLAB,
>>oGroup.RetrieveDesign(oGroupDesign, 'True', 'False')
"

No method 'RetrieveDesign' with matching signature found for class
'Interface.HyperSizer_Advanced_Structural_Analysis_Library,_v6.2.Group."
An engineer from NASA, who is doing the same thing except in VB, sent me his code and I have the same issues. Is there something on the HyperSizer end that I may not have setup right?
Thanks for the help.