Each time I start my file I have an error when one of the sheets I control is modified. It looks like the sub (ShowHideCtrls) called during the Worksheet change event is duplicate (but it's not, I checked this first). When I bypass the error (stop the WorkBookOpen process) and I try to manualy modify the sheet, the sub called during the worksheet change event works properly. It's crazy, I don't understand why I have this error at file's startup and not later when I use the file... Does someone has an idea about what's going on ? Thanks for your help
PS : I have three other files with the exact same code an no error at startup
Screenshot:

I try to remove the sub, but in this case it's not found, this why I'm sure there's no duplicates.
I tried to import code from an other book where it works properly, same result.