I have tried to use the printAlbumZip() - I have just inserted it to the default theme album.php page.
As result, I have got an error message telling me that the function is_dynamic() on line 3033 in the file zenphoto/zp-core/template-functions.php does not exist.

I have just commented it out and now the function printAlbumZip() works well, but was it really the best thing to do (is there a bug somewhere or did I something wrong)?

Thanks for your comment

Fabio

The problem is fixed in the current nightly builds