Hello,
making some tests with iso9660-writer, I discovered that:

1. ISO9660File(ISO9660File file) constructor didn't copy some properties. In order to solve the problem, I added:

this.enforce8plus3 = file.enforce8plus3;
this.enforceDotDelimiter = file.enforceDotDelimiter;
this.id = file.getID();

2. method apply(ISO9660File file) of JolietNamingConventions class rise an exception if the file name is 60 characters long (excluded the extension). I fixed the problem in the following way:

   if (filename.length() + extension.length() + (file.getVersion() + "").length() + 2 > 64) {
       if (filename.length() >= extension.length()) {
           // Shorten filename
           filename = filename.substring(0, 64 - 2 - (file.getVersion() + "").length() - extension.length());
       } else {
           // Shorten extension
           extension = extension.substring(0, 64 - 2 - (file.getVersion() + "").length() - filename.length());
       }
   }
   

Regards,
Davide Raccagni