I did a error for my .exe file. please help me

this is the error message for my .exe file made from GUI for ANN.

in cbmn_DC>pushbutton1_Callback at 81 in gui_main fac at 96 in cbmn_DC at 42 in @(hObject,eventdata)cbmn_DC('pushbutton1_Callback',hObject,eventdata,guidata(hObject)

Warning : While loading an oject of class 'nnetWeight' Undefined function or method 'initzero for input arguments of type 'char'.

Warning : An error occured when running a class's loadobj method. The object that was loaded from the MAT-file was a copy of the object before the loadobj method was run. The rest of the variables were also loaded from the MAT-file.

The encountered error was: Reference to non-existent field 'net_read_only'.

??? Undefined function or method 'sim' for input arguments of type 'struct'.

in cbmn_DC>pushbutton1_Callback at 96

in gui_main fac at 96

in cbmn_DC at 42 in @(hObject,eventdata)cbmn_DC('pushbutton1_Callback',hObject,eventdata,guidata(hObject)

as you guys see, this is the problem that Reference to non-existent field 'net_read_only'.

so, do you know the solution for this?please comment to me. thank you.