Microsoft Word code execution interrupted by macro error upon End Sub
This is one of the strange VB problems you may face using even very simple macros.
Your macro runs fine, but in the end (end sub) you receive a code execution error, that the macro is interrupted and you need to debug, etc.
Here is a way to avoid this absurd problem.
In the beginning of your macro, before all other code lines, add this one:
Application.EnableCancelKey = xlDisabled