I just made the mistake of trying to create 5 actions at once and when I clicked close after verifying that all 5 were in the list in the Actions dialog, they all disappeared with no warning or explanation when I clicked close. They don't show in the Actions menu and they're not there when I reopen the Actions dialog.
I tried recreating just one of those actions, again clicking close once I verified it appeared in the list, and it also disappeared. An example action is below. Is there something wrong with the actions I am trying to create?
$validate(X:\_sorted_electronic\%albumartist%\%album% (%year%)\%track% - %artist% - %title%,-)
If there's something wrong with the action I am creating, is there perhaps a better way you could be failing here than just silently deleting it?