I don't have access to a Windows machine right now, I usually recomend running pp with the -x flag:

pp -x -o 1193701.exe 1193701.pl
[download]

On Linux I created example exes using pp with and without -x, as you can see there's differences in what is being packaged:

 rwxrwxr-x  1 marto marto     149 Jun 27 16:31 1193701_oneline.pl
-rwxrwxr-x  1 marto marto     148 Jun 27 16:31 1193701_twolines.pl
-rwxr-xr-x  1 marto marto 3322431 Jun 27 16:32 oneline.exe
-rwxr-xr-x  1 marto marto 3417012 Jun 27 16:32 oneline_x.exe
-rwxr-xr-x  1 marto marto 3428235 Jun 27 16:34 twolines.exe
-rwxr-xr-x  1 marto marto 3428929 Jun 27 16:34 twolines_x.exe
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Note the different sizes. Runtime:

marto@netbook:~/perlmonks$ ./oneline.exe 
Can't locate Date/Calc.pm in @INC (you may need to install the Date::C
+alc module) (@INC contains: /tmp/par-6d6172746f/cache-c93faf27fca57f9
+a6de63ed7af3cc18b152dad8a/inc/lib /tmp/par-6d6172746f/cache-c93faf27f
+ca57f9a6de63ed7af3cc18b152dad8a/inc CODE(0x9ffa574) CODE(0x9ffa740)) 
+at script/1193701_oneline.pl line 4.
BEGIN failed--compilation aborted at script/1193701_oneline.pl line 4.

marto@netbook:~/perlmonks$ ./oneline_x.exe 
FINISHED

marto@netbook:~/perlmonks$ ./twolines.exe 
FINISHED

marto@netbook:~/perlmonks$ ./twolines_x.exe 
FINISHED
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Clearly, the one line of use... example isn't packaging Date::Calc when called without the -x option. The good thing about the executables created is that they are zip archives you can extract and examine the differences. If I get time later I'll do some more digging, but this should be a reasonable avenue for investigation.

1193701_oneline.pl:

#!/usr/bin/perl

use utf8; use 5.022; use strict; use List::Util qw(max); use Date::Cal
+c
qw(Delta_Days);

say "FINISHED";
my $pause_here = <STDIN>;
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1193701_twolines.pl

#!/usr/bin/perl

use utf8; use 5.022;
use strict; use List::Util qw(max); use Date::Calc qw(Delta_Days);

say "FINISHED";
my $pause_here = <STDIN>;
[download]