Just reporting in on Shin Honkaku Hanafuda (Japan) Dreamcast ISO from the main server; Its GDI is incorrect: "track15.bin" should be "track15.raw" to match the files in its directory. Without making that correction, NullDC will crash on load.

I double-checked the .bin files vs .raw files via a hex editor to increase my confidence that track15 was indeed a .raw file (and not an incorrectly named .bin file). Track15.raw seems to correctly be named as a .raw file, though I can't be sure. Although NullDC doesn't seem to care what the files are named as long as the GDI file matches the directory files.

Thank you for all the ROMs