Scripts can't be ran from button callback function??

I am trying to press a button in my uicontrol that will callback a function that has "run xxxx" script. i get these errors

"Error while evaluating UIControl Callback."

[Geoff Hayes]

Vadim - please copy and paste the full error message to this question. Also, please (at a minimum) show the callback function code so that we can see how this script is called.

[Shameer Parmar]

You need to keep the script name inside the callback of your push button.

for example:

function pushbutton_Callback(hObject, eventdata, handles)
% hObject    handle to msg_box (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

scriptName;