Check Dragon Warrior Randomizer Game File CRC (dwr)

You likely need a headerless version of the game file that is required. This tool can remove the header for you.
The following are known valid CRC codes for the required game file.

CAAF5C6B: Dragon Warrior (NES) (PRG0)
D4D5F5D7: Dragon Warrior (NES) (PRG1)

ROM info for the file you provided: