500 when trying to save settings

[choccyness]

Put a real site url in your settings

What do you mean?
Are you referring to the example.com? Because I've replaced my real domain with example.com for the posts here to retain privacy and security. Example.com is not in any of my actual files. Apologies if that wasn't clear.

If you mean "change the settings page in the admin console" - well I can't, that's my problem. Any time I try and save those settings, I get a 500. :-(