MATE mate-desktop/stable,now 1.16.2-2 amd64 on Debian 9.4
x-tile has been working problem-free on this installation since day one. And I use x-tile every day, several times a day.
Then a couple days ago I had to delete the main Desktop panel, create a new one, and repopulate it. All is well except x-tile will not come up. It does not come up with startup, and when I enter at the command line, I see the message WM Metacity MARCO, a new line, and that is all.
The journal shows no error.
Is x-tile holding a hard reference to the panel put in place at desktop install time?