i have programmatically deleted 'CommandButton2' from my sheet using

ActiveSheet.Shapes("CommandButton2").delete

now when i open my workbook i get the following:

Can't exit design mode because Control 'CommandButton2' can not be created

i can't find any references to command button 2 in my code (on this sheet) -
what do i do? I do have other commandbutton2's on other sheets.

if i try to rename one of my controls to CommandButton2 i get a

Ambiguous name detected: CommandButton2