I am inclined to think that the ECP should show a warning if "run once for each file" is chosen with {Files}, and visa-versa, since as far as I can see these options are mutually inconsistent.
See https://www.photools.com/community/index.php?topic=3256.
+1
Just to be clear, when I said "visa-versa", I meant that "run once" and {File.FullName} were also incompatible, or at least I assume they are, as I can't seen when it would make sense to include any file-specific variables in "run once".
QuoteI meant that "run once" and {File.FullName} were also incompatible, or at least I assume they are,
Not when only one file is selected. And there are also other pre-defined variables and the user is free to use all other IMatch variables and combine them to his liking. It will be impossible to catch all cases.
Maybe leave it as it is, with the extra note added to the help and if a user runs into the issue and posts a question, explain what he did wrong. The two pre-defined non-compatible variables with run for all are {Files} and {XMPFiles}, and they are even separated in the menu from the other variables.
I remain of the view that a warning in the dialog would be appropriate if "run once for each file" is chosen with {Files}. Doesn't worry me, but may help someone else.
Done for 5.1.16