Well, I just ran it in the folder where Unity compiled it. I think we will release the next update sometime within a month. Thanks for the feedback!
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Oh, you exported it from Unity on Linux? Unity exports it with executable permissions. If you then copy it to a filesystem that doesn't support executable permissions, those permissions will be lost (eg: if you copy it across to a Windows environment and zip it up, no executable permissions, but if you zip it up on Linux and don't modify that zip on Windows, then they should be preserved). Hope that sheds some light!