This content has been marked as final. Show 1 reply
This might be useful for others also...
After hours and hours of debugging headers and responses and comparing pages to others which work, I realised that this interactive report's display condition is based on REQUEST = SUBMIT.
As such, the actions menu will NOT set the Request parameter when clicking in the actions menu and the Apex engine refuses to send anything back to the browser - not even an error message.
I'll raise a bug for this via Oracle Support.