Let's find out:
with that sheet  the active sheet:
press Alt+F11 to open the vbe  (visual basic editor)
Make sure the immediate window's open with Ctrl+G (or View|Immediate
Window)
then type the following line in that pane followed by [Enter]:
?activesheet.shapes.count
if the result's not zero then enter the next line folllowed by
[Enter]:
for each shp in activesheet.shapes:?shp.name:next

You might get something like this:
CommandButton1
CommandButton2
CommandButton3
Button 29

in which case you've got some buttons on the sheet but not visible.
Come back  with what you get and we'll take it from there.