Before posting this, I did a search and noticed that there are a few other questions that may be related, but no applicable answers.
I have a pretty ordinary PC that I installed a new drive and loaded 22.10 on it. After getting Samba set up I noticed that when I double click a video file SMPlayer pops up and error message: "MPlayer/mpv has finished unexpectedly. Exit code: 2" Double clicking a video file on a local drive plays just fine. If open a terminal window on the Samba drive and use a command line to play the file, plays fine. Further, if I double click the file from Nautilus, after the error message, if I use "Open|File" a bizzare dialog box opens (a windows version?)
So I think Nautilus is doing something odd when it starts programs on Samba drives.
Oh, yes this very same PC was running 22.04 before the new install, and Nautilus/SMPlayer worked fine on all drives.
Any suggestions?
EDIT: Another oddity - if I single click a video file on the Samba drive, then right click and use "Open With" then select SMPlayer - it works! And if I go down to the bottom of that "Open with" box and select the Always use this application, the it works just like normal. So what did "Open with" do different than plain "Open" ?