After a system reboot, running displayline -r no longer reverts the file. I've tried using Skim 1.4.2, 1.4.1, and 1.3.22, and all 3 exhibit this behavior. Clicking "revert" in the file menu still works.
My only suspicion is that somehow the osascript broke with a recent update.
You seem to have CSS turned off.
Please don't fill out this field.
Works for me.
Perhaps you have special (non-ASCII) characters in the file name. Those won't work anymore, as 10.7 AppleScript broke that. This is the only change that was made. But that cannot be reverted.