Auto-create folder (if necessary) WITHOUT prompt?

Assume I smart sync a folder tree.

Now I delete one folder tree (destination side) and run the profile afterwards.

Normally a difference table appears where I can click
"mirror to destination".

Unfortunately occasionally (but not always) a prompt appears "Failed to prepare Notebook - Directory does not existing D:\log". The "usual" difference table is not shown.

How can I tell SB to AUTOMATICALLY create necessary folders
if necessary and display diff table?

Sometimes SB does it successfully without prompt popup.
So it must work somehow.

Peter