When I double-click racer_0.5.4beta1-english.run I get a message saying it couldn't detect the character coding, and to be sure I wasn't trying to run a binary file. I've tried many different character codings, to no avail. I'm not even sure what a binary file is. I've only been using Linux for about a year, so I still have plenty to learn. How can I get this thing up and running?