All of a sudden: No entry 'bin\config.bin/CfgVehicles/JeepWreck1.scope'

I get this message on boot and anytime I try to add anything in the editor.

What is it? How can I fix/get rid of it?

Have you recently installed any addons or mods? If so, try starting the game without them and see if the problem persists.

Have you recently installed any addons or mods? If so, try starting the game without them and see if the problem persists.

yeah, that's the first thing I thought, so tried vanilla and still does it. I'm baffled.

Fixed - found a whacked out .pbo file in my Addons directory that must have got unzipped during a mod install.