Just updated to 2.2.5 and the shortcode is working as expected. Thank You.
No worries, managing software is hard work and documentation can be equally as difficult.
I’ll update to the latest and let you know if that works.
Thank You
Forgot to mention that the shortcode is producing this output in the markup:
<!-- StageShow Plugin 2.2.4 for WordPress by Malcolm Shergold - http://www.corondeck.co.uk/StageShow -->
<!-- StageShow BoxOffice - No Output for ShowID=3 -->
<!-- OnlineStore - No Output -->
