Okay, I have tried a couple of things that you've kindly suggested, but there is no change. Idk where the "Guests allowed" setting is so I didn't enable that.
Per the screen shot above, you'd have to go to the affected SMB share and go into edit mode. Guests allowed is a setting near the top.
(But this will only be useful if changes are actually registered.)
In any case, the message "Pending configuration changes. You must apply these changes in order for them to take effect" always appears at the top of the window, and every time I try to apply them I get the "failed to execute command export ..." error mentioned before. It looks to me like there is some kind of auto-generated script to execute omv-salt deploy run, etc., but the script is malformed.
I have no idea if any of the changes I'm attempting are happening. Shouldn't this script error be resolved first?
Thanks, @ryecoarron, for looking at this error.