Ah! Understood. My bad.

Every single parent item in my Cookie list is showing a "-", despite all child items being checked.

Cookie 6.1.1
macOS 10.15.6 (19G73)

Well, I no longer see the little spinning gear appear in my menu bar upon quit of SafariTP, and there's no other sign of Cookie having issues... So I think things are looking good! Thanks!

EDIT: I just saw the tiny gear flash on in the menu bar upon quit of SafariTP - but only for an instant.

@SweetP Thank you.

To reiterate: my history IS being deleted as expected (upon SafariTP quit); I can't tell if my cache is being deleted or not.

Also note that I see tons of messages like this in Console after quitting SafariTP:

Sandbox: find(31092) System Policy: deny(1) file-read-metadata /private/var/folders/8c/t4q625mn1sv94y7z9w5k8zzc0000gn/0/com.apple.Safari/SafariFamily

After posting the above message, I quit SafariTP again at which point I saw this:

and then, after several minutes, this:

Please note, however, that my history is being deleted from SafariTP upon quit/relaunch:

I don't know how to check to see if my cache data is being removed or not...

Quit Cookie. Replaced the app with the new beta. Relaunched Cookie. Quit SafariTP. Got prompted to update one script, which seemed to be successful, as I got the "OK" dialog. However - and this is all part of this single instance of quitting SafariTP - I got this:

Did as requested.

This is the directory listing BEFORE the +x commands:

And this is the +x commands and the "new" directory listing:

And this is the directory path in question:

A quit/relaunch/quit of SafariTP still results in this:

If you're asking me, yes, my account is an Admin account.

Again, thank you for your reply.

I replaced both .sh files.

I rebooted.

I launched and quit SafariTP. No joy:

https://app.box.com/s/sy60rn496fb85s4s5umhj7czhkuxft69

I don't know if any of this matters, but I get a huge list of errors in Console while that little gear is spinning:

Sandbox: find(1115) System Policy: deny(1) file-read-metadata /private/var/folders/8c/t4q625mn1sv94y7z9w5k8zzc0000gn/T/com.apple.WebKit.Networking.Sandbox

unable to create CacheDeleteDaemonVolume for <private>

Failed to open database at <private>. Error: Error Domain=com.apple.Safari.SQLite Code=14 "unable to open database file"