Here's what I found on the ActiveState PDK mailing list...

"It looks like you are using the Thread.pm module. PerlApp doesn't detect dependencies correctly for it; you will need to explicitly add the threads.pm module to your application:

   perlapp --nocheck --add threads YourApp.pl
[download]

However, you may want to change your script to use threads.pm explicitly. Thread.pm is just a wrapper for backward compatibility with older thread implementations. If you only use Perl 5.8 and later, Thread.pm is just useless bloat."

-(Credit to Jan Dubois c/o PDK@listserv.ActiveState.com)

I used:

    C:\Work>perlapp --nocheck --add threads my_app.pl
[download]

...and it works now. Thanks Jan! :)

-P0w3rK!d