Yes, I tried that already, tried it just again. This is working, Hazel is able to move the file to another local folder. I then set up a new folder in Hazel with a rule, which should move the file from the local folder to the Ubuntu share, but then I have the same problem again: "Operation not permitted". When I move the file manually to ANOTHER local folder, and then back into the first local folder, I still get the same problem. But I am able to move the file manually in finder to the Ubuntu share, without any asking. I am completely lost why this is not working anymore.