I use CKEditor on a server with SSL and also use the destroy function without issue. I notice that you say you are passing in a 'true' parameter and I think that may be the issue for you. All that you should need to do is the command without any parameters.
Re: SSL: editor.destory(true) triggers IE security warning
I use CKEditor on a server with SSL and also use the destroy function without issue. I notice that you say you are passing in a 'true' parameter and I think that may be the issue for you. All that you should need to do is the command without any parameters.
See if that helps.