Sounds like you're using the command in the wrong way. Are you familiar with Opus button editing/customizing?
Have a look at the Toolbar Editing Video Tutorial if you haven't already.
If you're comfortable with all of that stuff, could you post a screenshot of how you've set up the button (i.e. the button editor dialog) and also the error message as it appears?
Also, are there any + characters in the filepaths?
Let's get the button as it is working first, then we can worry about moving the files to another directory.
By the way, for anyone else reading this thread, it looks like {shootingtime} works now, although it still cannot be formatted into whatever date/time format we want. It is now changed so that the default format works in a rename. (i.e. The : characters are replaced with _ characters so the name isn't invalid.) If a different date format is needed that could be done in a second rename pass. Hopefully we'll get the ability to format the time in the first pass at some point, which would be ideal.
