Unable to change Resource Template (Revo 2.3.1)

Hi there,

I'm can't seem to change the template for a resource in revo 2.3.1
When I select the new template it gives me the usual warning pop-up to make sure I save afterwords, but when I click 'Yes' it goes straight to the Please Wait Saving pop-up that just scrolls indefinitely.

Any ideas?

Thanks in advance.

If you open the network debugger in your browser what if any errors do you see?

Right Click on page > Inspect Element > Network Tab - Perform action that has issue.

Thanks for your reply. I tried the network debugger but it doesn't show any errors. Any other suggestions?