When I include utf8 either via "use" or via #perl2exe_include, I get lots of following warnings:

Use of uninitialized value in pattern match (m//) at PERL2EXE_STORAGE/
+utf8_heavy.pl line 185, <$fh> line 1.
Use of uninitialized value in scalar assignment at PERL2EXE_STORAGE/ut
+f8_heavy.pl line 201, <$fh> line 1.
...
Use of uninitialized value in scalar assignment at PERL2EXE_STORAGE/ut
+f8_heavy.pl line 317, <$fh> line 1.
Use of uninitialized value in pattern match (m//) at PERL2EXE_STORAGE/
+utf8_heavy.pl line 318, <$fh> line 1.
[download]

and finally HTML::Template dies with:

panic: swash_fetch at PERL2EXE_STORAGE/HTML/Template.pm line 1910, <$f
+h> line 1.
[download]

, so probably including utf8 in script isn't a good idea?