Resolution to the problem:
Add the following code to the start of your script and compile it again:
#perl2exe_include "XML/Parser/Style/Tree.pm";
#perl2exe_include utf8;
#perl2exe_include "unicore/lib/gc_sc/Word.pl";
#perl2exe_include "unicore/lib/gc_sc/Digit.pl";
#perl2exe_include "unicore/lib/gc_sc/SpacePer.pl";
#perl2exe_include "unicore/To/Lower.pl";
#perl2exe_include "unicore/To/Upper.pl";
#perl2exe_include "unicore/To/Digit.pl";
#perl2exe_include "unicore/To/Fold.pl";
#perl2exe_include "unicore/To/Title.pl";
Cheers