HI, I am having issues with the Gretna GUI where once I press the group Id naming button or to specify the threshold sequence it gives me the following errors.

Error using inputdlg (line 67)
This function only accepts strings as its first parameter.

Error in gretna_GUI_NetAnalysisInterface>ChangedAction (line 1541)
Ans=inputdlg({'Input Current Item'}, 'Current Item',...
Error in gretna_GUI_NetAnalysisInterface>OptItemList_Callback (line 428)
ChangedAction(hObject);
Error in gui_mainfcn (line 95)
feval(varargin{:});
Error in gretna_GUI_NetAnalysisInterface (line 42)
gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)gretna_GUI_NetAnalysisInterface('OptItemList_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating UIControl Callback.

Help will be greatly appreciated.

Kind Regards,
Sumit