If you want to have reset Spotlight so that it re-indexes your drive, go to System Preferences > Spotlight and select Privacy. Drag the hard drive icon into the Privacy pane and drop it there. Then, select the hard drive and click - to remove it.
Thanks. I've just done that and it's just completed the re-index but still doesn't find the folder. I also own OnyX, so I'll give it a try in the morning.
If you really want to disable journaling, Disk Utility can do it but it's not obvious. Select the volume and then Option-click the File menu. Disable Journaling will appear as one of the choices.
No, that's not something I'd do. I had thought that the answer might be found in Disk Utility and therefore looked there. i.e. had journaling somehow got turned off?
When I saw that the enable/disable button wasn't even functional, I wondered if Disk Utility might itself be faulty and thereby be contributing to the issue.