I also had the zero length file problem when I ran it. I tried it on both of my linux boxes (debian:woody and RH:6.2). Both boxes use perl 5.6.1.

I think the problem is in the line:

 Butler( $fname, "write", \@kurt );
[download]

I am not familiar with File::Butler enough to know what it is doing. I had to load it to run CryptPad. However, I don't see another reference to kurt...except the author's name<G>.

chuck