I am a newbie to DNN and not a developer, so please be patient with me.  I am running DNN 4.7 (possibly 4.6, but pretty sure it is 4.7, I can't login to confirm due to the issue I am having) on a shared hosting box.  The site has been up and was functioning fine for several months.  The public view and functions on my site work fine.  Logging in as a regular user works fine.  But if I try to login with either of my admin level accounts (host or site), I get the following error:

Server Error in '/site' Application.

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The resource cannot be found.

Doing searches for this error here led me down the path of caching errors with the calendar module (I can't log in to confirm or change any settings, but the server hasn't blown up in the 2 weeks I have had this error though) and return URL errors (but a regular user has the same return URL and they work fine).  I don't recall any changes at the time the error started, except (memory is foggy now) I it might have been when I deleted a page that was only for priveldged users (based on a custom security group I set up).

Any insight or next steps is greatly appreciated.  Not being able to add content or admin the site is a bit of a hinderance.

So no one has any insight on this?

Further research is showing that it is actually an issue of "view" vs. "edit", not a priviledge level issue.  Any account with editting privs that had the control panel default set to edit was blowing up.  When finding an account that was set to "view" in the top control panel, they are able to auth.  As soon as you hit the "edit" radio button, the site errors with the text listed above.

That said, I am still at a loss as to what could be causing this error.  So I can at least admin users at the moment, but can't update the site.

Any help?