When printing the document using Adobe PDF printer, I get this:
This PostScript file was created from an encrypted PDF file.Redistilling encrypted PDF is not permitted.
But if I look in the PDF file (open without any password), it says
Why can't I print it? Even through a physical printer?
I got that message using ps2pdf.
The solution was to edit the PS file manually and to delete these lines:
%% Removing the following eleven lines is illegal, subject to the Digital Copyright Act of 1998.
mark currentfile eexec
[...]
cleartomark