If you're using Path Finder as your Finder, and you ask Butler to open a folder from its menu or via hot key, it probably won't work. We investigated, and believe this is a bug in Path Finder. We have written to them, explaining the problem, but have not heard back. Until this is resolved, you can use the following workaround:

1. Quit Butler

2. Open Terminal

3. Paste the next line, then hit Return:

   defaults write com.manytricks.Butler "Always Reveal Folders" -bool YES

4. Relaunch Butler

You should now be able to open your Path Finder folders from butler.