Validation is working fine now thanks.
1. Can't view Simple view of Recordset. It says the SQL is too complex even when it is the simplest query possible.(see attached).
2. Javascript error in /configuration/ServerBehaviors/PHP_SQL/DynamicSelectList.js - it doesn't actually exist. (see attached).
Plus a few other errors where the recordsets aren't recognised when the page is re-opened.
And errors in the Query Builder - Tables not showing and a javascript error on close (see attached).
This was all working until recently. I really don't know what is going on and I need this to work.