I also had some trouble with standalone scripts made with PAR and found out it doesn't automatically import all TK modules you used. I think it also doesn't follow modules that are used by other modules you used in your script.

F.I. I used

use Tk;
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Which worked in my normal perl script but to get it working with PAR as a PAR standalone executable I had to use:

use Tk;
use Tk::Menubutton;
use Tk::Text;
use Tk::FileSelect;
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The same goes for:

use IO::File;
use File::Find;
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One of these seems to use Carp::Heavy;

When I included the extra modules my standalone exe worked like a charm. I found out which modules were missing by running the exe from the commandline on a machine on which I have no perl installed. The error output tell you the missing modulename. In your case you have to include at least;

use Archive::Zip;
use Tk::Dialog;
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I hope it solves your problems. It worked for me ;)
P.S. If it all works you might want to use the option --gui to get rid of the dos window.