Maybe my workaround package from this link is for you:
https://forum.doom9.org/showthread.p...31#post1881431
Maybe you can even help me to make it more "universal", that means working under more local Windows versions.
When you mix an older MKVToolnix GUI with newer CLI versions, Toolnix will pop up a warning. My package clicks aways this warning, but for this to work it needs a substring which is part of the warning window title. I started with "Problem" as the substring to look for, but I later changed it to "robl" because the "P" can be lowercase or uppercase depending on the language, and the "e" character is different in French (it has an accent grave).
You did not say where you come from, can you test it and tell me what the window title of this warning message is for you?
Cheers
manolito