Hey,
That’s a bit odd! The site I’m running has the most up to date version of WP also and seems to be running alright. Do you have the capability to install another wp site on your hosting along side your main site just to install stageshow to see if it runs without any issues? There probably is an easier way to look at it but I ain’t too clued up.
Regarding the invalid seat section yes, I can help with that.
Stageshow -> settings -> advanced tab -> custom javascript
Ensure there is a custom javascript file selected in the dropdown and click edit.
Look for the function stageshowCustom_AlertInvalidSeat() If it exists then edit it. If not create it. An example from the site I run is below:
function stageshowCustom_AlertInvalidSeat()
{
alert('INVALID SEAT SELECTION\n\n' + 'Please ensure the following\n\n' + "? You are not leaving a single seat when making your selection\n\n" + 'If you are having issues you can call us on 01555 ****** - Option 3');
}
Hope this helps,
Chris