Here's what I get with Deparse:

[C:/TEMP] perl -MO=Deparse not_encrypted.pl
print "hello world\n";

...

[C:/TEMP] perl -MO=Deparse encrypted.pl
Aborting, Compiler detected at d:/Claudio/Perl/lib/DynaLoader.pm line 
+219.
Compilation failed in require at encriptado.pl line 1.
BEGIN failed--compilation aborted at encriptado.pl line 1.
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This is the code in the decrypt.xs template that cares for this:

    /* Check for the presence of the Perl Compiler */
    if (gv_stashpvn("B", 1, FALSE))
        croak("Aborting, Compiler detected") ;
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Thanks for the help!