in 0.5 you had to enter the filename eg /home/me/files/luxrender
in 0.6 you need to remove the filename, and use only the path eg /home/me/files
it will automatically add luxrender and luxconsole and search for them in the path you gave.
I'm sorry, I've tried all the paths possible, but it's the same, it doesn't see the application. Strange is, it works well if I specify the path of the 0.5 version with this last exporter. Are there any people who tried on OS X who can tell me what their path is?