Error creating vault store - bizzare back and forth error

OK. trying to set up a vault store. I create a share and at the end of the process I get this error:

as you can see I DO have one folder below the share:

it's called 'Archive'. So, I delete the folder and try again. Then I get this error:

So I delete it as shown here:

How is this even possible :) Please, I need some input. Thanks!