First off, if the SCP forum was up I'd point you to Phreak's fixed Fred. Actually, from what I understand, there's an even more bleeding-edge version somewhere on Game Warden, so you should probably check there. However, I seriously doubt that it's having any effect on the campaign editor.
To address your problem directly, the catch seems to be that it doesn't look for them on its own. Download a campaign and put it somewhere in your path, then open it with the campaign editor. That should knock the available missions into their correct state, at which point you can create a new campaign and go from there. Bit of a bug, it looks like.
