I can actually start this application now but it does not function at all. Upon start up, I get:

date: illegal option -- j
usage: date [-nu] [-r seconds] [+format]
date [[[[[cc]yy]mm]dd]hh]mm[.ss] (1)

Upon attempting to add files to a non-existent list of files to convert, I get:

NSReceiverEvaluationScriptError: 4 (1)

In short, based upon what I get, this is not ready for release; it simply does not work. Keep trying though.