I have 100s of excel workbooks and each of them has the same macros to run.
Sometimes it is required to change macros. I have written a macro in another
excel page (using vbcomponent etc) and use it many times it and run
successfully. Last time I have added a code to all excel workbooks starting
"sub workbooks_deactivate()" and there was no problem. Whenever I deactivated
a workbook, code in sub was running.

But last time I tried the add another sub with same macro, EXCEL crashed. I
found that if I delete the "sub workbooks_deactivate()" from excel workbooks,
my code is running. Of course I don't want to update 100s of macros manually.
Waiting for help