Cubase Pro 9.0.10 update

Finally got around to updating tonight. Was receiving errors because it was looking for cubase9.msi in the downloads folder that I originally installed it from. Of course I had removed it as I don’t like clutter. Got it to work by copying the folder & its contents back to the downloads folder.

My question:
Do I have to forever leave that temporary folder in my downloads folder, for future updates? What about the temporary folder for this update that it created, safe to remove?

What do you do?

Thanks,
Mike

No ideas?