Yes, anytime I try to open any of those many files I get the 'unknown developer' error message.
Does Text Edit launch as expected from /Apps?
(
This, by the way, is what Get Info tells me about my file, which opens in TextEdit, as does Urquhart's. All my files in that folder except for one that's a TextWrangler text document w icon [my doing, apparently, but I dunno why] are TextEdit.app Documents, but none of them carries the TextEdit icon.)
Okay, let's give this a shot; you've got nothing to lose and maybe we'll learn something.
- Quit Safari.
- Trash your file.
- Empty the trash.
- Shut down/Start up.
- Cross your fingers.
- Check your file.