Can't preview or save; install had been working fine for months

[kanjigirl]

My client suddenly can't preview or save any edits - he gets a message saying 'Oops - you can't do that' for all edits. This happens in IE8 and FF.

His installation has been fine for many months, this just started happening. What should I check?

[admin]

Is this a snippetmaster message, or is it a browser message?

If it was working fine and then suddenly stopped working, I think the problem is most likely that your hosting provider has changed something with your website or account.  You should maybe ask them what they changed?

Let me know...