Hi guys,
My customise page accessed via the dashboard loads as expected but in a frozen state (can’t click the menu items on the left)

Then after a few seconds the page snaps…
“Aww snap…”
I’ve eliminated the basic ideas, like reloading the browser, using a different browser, etc, but as things stand I can’t customise the page.
Any help appreciated
Update
Also noticed that if I try to access customise from the mini menu (at the top of the logged in Admin view of the website), I get a 403 forbidden message from my web host. May be related but no idea how!
