Just the normal checks I guess, make sure you have "In files matching" set, tick "Search subfolders" and make sure you have selected the correct folder in the "Folder" pane on the left. HTH
Then I open up and see
the person fumbling here is me
a different way to be
I had a similar issue, and discovered that adjusting the "Line break characters" in the options helped. I use windows, but am working on files on a linux server, so adjusting to "Linefeed only (Unix)" helped.