unity launch .app created in applescript - Win32Exception: Cannot find the specified file

All I want to do is launch an apple script that I've saved as a .app file so will play on launch. I've launched other applications with this line of code:

   System.Diagnostics.Process.Start("/file path/file");

but doesn't work with the script I wrote.

variations of code I've tried:

   System.Diagnostics.Process.Start("/file path/file");

or

   System.Diagnostics.Process.Start("osascript -e 'tell  "/file path/file");

or

   ProcessStartInfo info = new ProcessStartInfo("/usr/bin/osascript, -e, tell "/file path/file");

or

     ProcessStartInfo info = new ProcessStartInfo("/file path/file");
     info.Arguments = "-silent";
     Process.Start(info);

i just get the same error when i try to access it:

Win32Exception: Cannot find the specified file System.Diagnostics.Process.StartWithShellExecuteEx (System.Diagnostics.ProcessStartInfo startInfo) (at :0) System.Diagnostics.Process.Start () (at :0) (wrapper remoting-invoke-with-check) System.Diagnostics.Process.Start()..... etc. goes on a bit

any ideas? .. you all seem to be much smarter than me thanks