Catchable fatal error

just found a bug on Montezuma. When images are added to the site and, instead of leaving them linked to the image file (default state), by linking them to Attachment Page (image below), one gets the error message (second image below):


Caveat: I haven't tested this on an online site, just on a localhost installation on my computer (I use Xampp as my Apache/MySQL environment), but I would imagine the behavior would be the same in a real-world scenario.

I saw this thread by Piotao and Juggledad, but my error was produced on a page, not a post. So no category would be applicable in this scenario. I'd hate to break something by applying patches I don't understand, would the solution on that page still be applicable?