Attempt to reference field of non structure array and UIcontrol callback error

i have two M-figures. the first one is INITIAL and the second one is INPICA, the first contains radio buttons which upon selecting open the INPICA figure. if i run only the INPICA, there is no error. if I run the INITIAL first and then the INPICA, then this error shows up. where might the error be?

??? Attempt to reference field of non-structure array.

Error in ==> inpica>pushbutton2_Callback at 89 imshow(I, 'parent', handles.axes1)

Error in ==> gui_mainfcn at 96 feval(varargin{:});

Error in ==> inpica at 42 gui_mainfcn(gui_State, varargin{:});

Error in ==> guidemfile>@(hObject,eventdata)inpica('pushbutton2_Callback',hObject,eventdata,guidata(hObject))

??? Error while evaluating uicontrol Callback

Answer 1

[Image Analyst]

Chances are, you have a "clear" or "clearvars" or "clear all" in your callback. Get rid of that line.

[KINGSHUK DEKA]

no i looked it up, it isn't there