Children of Button Groups Not Properly Initiated In GUI

I am experiencing a strange phenomenon when I run a GUI that I created in GUIDE. When I run the GUI, the items inside of button groups sometimes become useless and their text strings disappear. It's as if being in the button group caused them to not initialize properly. It is difficult to tell when the problem will occur and when it will not, but rebooting my MATLAB environment typically gives me one shot at a working GUI.

I've tracked down the handle information for one of the objects that is being affected by the problem. Below is the information, first for the button when it is working normally, and then for the button when it is broken. You can see that Callback, String, and Tag are rendered empty. Also, I transform the Units of all of my objects to Normalized in the OpeningFcn, and you can see that the broken button is unaffected by this transformation.

Normal Button Handle Info

 BackgroundColor: [0.9412 0.9412 0.9412]
           BeingDeleted: 'off'
             BusyAction: 'queue'
          ButtonDownFcn: ''
               Callback: @(hObject,eventdata)EADS_GUI('Push21_1_Callback',hObject,eventdata,guidata(hObject))
                  CData: []
               Children: [0x1 double]
               Clipping: 'on'
              CreateFcn: ''
              DeleteFcn: ''
                 Enable: 'on'
                 Extent: [0 0 0.0184 0.0182]
              FontAngle: 'normal'
               FontName: 'MS Sans Serif'
               FontSize: 8
              FontUnits: 'points'
             FontWeight: 'normal'
        ForegroundColor: [0 0 0]
       HandleVisibility: 'on'
                HitTest: 'on'
    HorizontalAlignment: 'center'
          Interruptible: 'on'
            KeyPressFcn: ''
             ListboxTop: 1
                    Max: 1
                    Min: 0
                 Parent: 451.0022
               Position: [0.0301 0.3235 0.1221 0.6471]
               Selected: 'off'
     SelectionHighlight: 'on'
             SliderStep: [0.0100 0.1000]
                 String: 'Simple'
                  Style: 'pushbutton'
                    Tag: 'Push21_1'
          TooltipString: ''
                   Type: 'uicontrol'
          UIContextMenu: []
                  Units: 'normalized'
               UserData: []
                  Value: 0
                Visible: 'on'

Empty Button Handle Info

 BackgroundColor: [0.9412 0.9412 0.9412]
           BeingDeleted: 'off'
             BusyAction: 'queue'
          ButtonDownFcn: ''
               Callback: ''
                  CData: []
               Children: [0x1 double]
               Clipping: 'on'
              CreateFcn: ''
              DeleteFcn: ''
                 Enable: 'on'
                 Extent: [0 0 0.8000 0.3077]
              FontAngle: 'normal'
               FontName: 'MS Sans Serif'
               FontSize: 8
              FontUnits: 'points'
             FontWeight: 'normal'
        ForegroundColor: [0 0 0]
       HandleVisibility: 'on'
                HitTest: 'on'
    HorizontalAlignment: 'center'
          Interruptible: 'on'
            KeyPressFcn: ''
             ListboxTop: 1
                    Max: 1
                    Min: 0
                 Parent: 451.0021
               Position: [3.4000 0.8462 13.8000 1.6923]
               Selected: 'off'
     SelectionHighlight: 'on'
             SliderStep: [0.0100 0.1000]
                 String: ''
                  Style: 'pushbutton'
                    Tag: ''
          TooltipString: ''
                   Type: 'uicontrol'
          UIContextMenu: []
                  Units: 'characters'
               UserData: []
                  Value: 0
                Visible: 'on'

I have images of the normal and broken GUI that I can share if anybody is interested. Help on the subject will be greatly appreciated.

Version: MATLAB R2009b

Regards, Jeff