Hi, i have pushed the libisofs bug fix upstream
https://dev.lovelyhq.com/libburnia/libisofs/commit/acb4bd143c6374319e4f0fd91c23cd5bd93a3616 (Small but decisive.) If you or any bystanders prefer a GNU xorriso development tarball, i can upload one. For now i guess that you are prepared to build a new libisofs from git. Have a nice day :) Thomas