Thank you, you were right that the problem is here; interestingly it seems to be that File::Find enumerates the directories but then doesn't recurse into them. Whereas on the command line it does. Thus the files at the top level end up in the zip file, but anything below it doesn't.

This is all happening in a temp dir, so it can't be a permissions things as the files in the temp directory are being created (successfully) by the same process as creates the temp directory; indeed I see the user running Dancer (me) has full control over the temp dir, the top level files and the subdirs and the files in them as I would expect; identical permissions throughout. This is all on Windows.

So why is File::Find not recursing in?

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