Mine

The installer was unable to read the file "<unknown>". This error may be caused by problems with the media or drive at --for example, a scratched or dirty CD-ROM/DVD-ROM, hard drive corruption, or a networking problem while downloading the installer. (The data being read was "Repack-MPQ\Data#patch.MPQ\Creature\FrostWurm\FrostWurm.m2", and the error code was 38.) If this problem persists, please contact Blizzard Technical Support. (MPQFile::Read)