I'm attempting to fix this one.
One question first: If you right click on Vox Gremory App and select "Show Package Contents" then go on Contents/MacOS does it show as "document" or "Unix Executable File"?
My guess for your issue is that zipping on Windows before distributing messes the format up. I'll be trying to archive the app on Mac, and distribute it this way to see if the issue will be fixed. I'll be uploading R8 today. Let me know if the issues are fixed once the new build is released, thanks!