Export Session does nothing

Doing File> Export > Session... brings up the options as you'd expect: file location, "Save copies of associated files" etc, but when I click OK, either nothing at all then happens (exactly as if I'd clicked Cancel) or it (erroneously) gives a message saying "The selection contains one or more files whose file format is either unknown or not supported by Audition. Please select a file format for these files" with a dropdown menu to select Wave PCM or AIFF. Regardless of what I select, then click OK, Audition just does nothing...no files created, nothing. All the files in the project seem to be fine, and Audition plays them back without a problem.

I've tried openign up the debug console to see if there's anything obviously werong being reported in there, but without really knowing what I'm looking at, nothing untoward seems to be happening. In fact nothing at all.

I do not want to export a mixdown, I want to export the whole project, with all the files, so I can hand it over to someone else on another machine. Exactly as I'd do in After Effects using "Collect Files". If I turn off "Save copies of associated files", then Audition does indeed export a copy of the session....but I can just do "Save As..." for that. It would seem that it is impossible to export a session and hand it over to someone else without manually digging out every single file I've used from wherever they're located and manually copying each and every one!!!!!!!

I'm on Windows 10. I've tried Autition version 23.1.0.57 (Beta) and the latest public release version (2023) and I also just installed Audition 22.0.0.96, and this does not work either. Has anyone else got 'Export Session' to actually work?